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action replay
1: (television) showing again some action (especially sports action) that has been recorded on video tape [syn: {replay}]
action spectrum
1: the efficiency with which electromagnetic radiation produces a photochemical reaction plotted as a function of the wavelength of the radiation
actionable
1: affording grounds for legal action; "slander is an actionable offense"
Actitis
1: a genus of Scolopacidae [syn: {genus Actitis}]
Actitis hypoleucos
1: a variety of sandpiper [syn: {European sandpiper}]
Actitis macularia
1: common North American sandpiper [syn: {spotted sandpiper}]
Actium
1: an ancient town on a promontory in western Greece 2: the naval battle in which Antony and Cleopatra were defeated by Octavian's fleet under Agrippa in 31 BC
Activase
1: a thrombolytic agent (trade name Activase) that causes fibrinolysis at the site of a blood clot; used in treating acute myocardial infarction [syn: {tissue plasminogen activator}]
activate
1: put in motion or move to act; "trigger a reaction"; "actuate the circuits" [syn: {trip}, {actuate}, {trigger}, {set off}, {spark off}, {spark}, {trigger off}, {touch off}] 2: make active or more ac...
activated
1: (of sewage) treated with aeration and bacteria to aid decomposition 2: of e.g. a molecule; made reactive or more reactive [syn: {excited}] 3: rendered active; e.g. rendered radioactive or luminesce...
activated carbon
1: powdered or granular carbon used for purifying by adsorption; given orally (as a slurry) it is an antidote for some kinds of poisons [syn: {activated charcoal}]
activated charcoal
1: powdered or granular carbon used for purifying by adsorption; given orally (as a slurry) it is an antidote for some kinds of poisons [syn: {activated carbon}]
activating
1: causing motion or action or change [syn: {activating(a)}, {actuating(a)}] n : the activity of causing to have energy and be active [syn: {energizing}, {activation}]
activating agent
1: (mineral extraction) a surface-active chemical used in flotation process to increase the attraction to a specific mineral
activation
1: stimulation of activity in an organism or chemical [ant: {inactivation}] 2: the activity of causing to have energy and be active [syn: {energizing}, {activating}] 3: making active and effective (as...
activation energy
1: the energy that an atomic system must acquire before a process (such as an emission or reaction) can occur; "catalysts are said to reduce the energy of activation during the transition phase of a r...
activator
1: (biology) any agency bringing about activation; a molecule that increases the activity of an enzyme or a protein that increases the production of a gene product in DNA transcription [ant: {inhibito...
active
1: tending to become more severe or wider in scope; "active tuberculosis" [ant: {inactive}] 2: engaged in or ready for military or naval operations; "on active duty"; "the platoon is combat-ready"; "r...
active agent
1: chemical agent capable of activity [syn: {active}]
active air defense
1: air defense by the use aircraft or missiles or artillery or electronic countermeasures
active application
1: an application that is currently running and in the foreground
active birth
1: childbirth during which the mother is encouraged to be an active participant
active citizen
1: a citizen who takes an active role in the community (as in crime prevention and neighborhood watch)
active immunity
1: a form of acquired immunity in which the body produces its own antibodies against disease-causing antigens
active matrix screen
1: a type of LCD screen used for some portable computers; there is a separate circuit for each pixel
active placebo
1: a placebo used in experimental tests of a drug that has noticeable side effects; "an active placebo mimics the side effects of the experimental drug"
active site
1: the part of an enzyme or antibody where the chemical reaction occurs
active transport
1: transport of a substance (as a protein or drug) across a cell membrane against the concentration gradient; requires an expenditure of energy
active trust
1: a trust in which the trustee must perform certain duties [ant: {passive trust}]
active voice
1: the voice used to indicate that the grammatical subject of the verb is performing the action or causing the happening denoted by the verb; "`The boy threw the ball' uses the active voice" [syn: {ac...
actively
1: in an active manner; "he participated actively in the war" [ant: {passively}]
activeness
1: the state of being active; "his sphere of activity"; "he is out of action" [syn: {action}, {activity}] [ant: {inaction}, {inaction}, {inaction}] 2: the trait of being active; moving or acting rapid...
activewear
1: attire worn for sport or for casual wear [syn: {sportswear}, {athletic wear}]
activism
1: a policy of taking direct and militant action to achieve a political or social goal
activist
1: advocating or engaged in activism [syn: {activistic}] n : a militant reformer [syn: {militant}]
activistic
1: advocating or engaged in activism [syn: {activist}]
activity
1: any specific activity; "they avoided all recreational activity" [ant: {inactivity}] 2: the state of being active; "his sphere of activity"; "he is out of action" [syn: {action}, {activeness}] [ant:...
actomyosin
1: a protein complex in muscle fibers; composed of myosin and actin; shortens when stimulated and causes muscle contractions
actor
1: a theatrical performer [syn: {histrion}, {player}, {thespian}, {role player}] 2: a person who acts and gets things done; "he's a principal actor in this affair"; "when you want something done get a...
actor's agent
1: a business agent for an actor [syn: {theatrical agent}]
actor's assistant
1: a wardrobe assistant for an actor [syn: {dresser}]
actor's line
1: words making up the dialogue of a play; "the actor forgot his speech" [syn: {speech}, {words}]
actress
1: a female actor
Acts
1: a New Testament book describing the development of the early Church from Christ's ascension to Paul's sojourn at Rome [syn: {Acts of the Apostles}]
Acts of the Apostles
1: a New Testament book describing the development of the early Church from Christ's ascension to Paul's sojourn at Rome [syn: {Acts}]
actual
1: presently existing in fact and not merely potential or possible; "the predicted temperature and the actual temperature were markedly different"; "actual and imagined conditions" [syn: {existent}] [...
actual damages
1: (law) compensation for losses that can readily be proven to have occurred and for which the injured party has the right to be compensated [syn: {compensatory damages}, {general damages}]
actual eviction
1: the physical ouster of a tenant from the leased premises; the tenant is relieved of any further duty to pay rent
actual possession
1: (law) immediate and direct physical control over property
actual sin
1: a sin committed of your own free will (as contrasted with original sin) [ant: {original sin}]
actualisation
1: making real or giving the appearance of reality [syn: {realization}, {realisation}, {actualization}]
actualise
1: make real or concrete; give reality or substance to; "our ideas must be substantiated into actions" [syn: {realize}, {realise}, {actualize}, {substantiate}] 2: represent or describe realistically [...
actualised
1: changed from potential to actual; "saw his worst fears actualized" [syn: {actualized}]
actuality
1: the state of actually existing objectively; "a hope that progressed from possibility to actuality"
actualization
1: making real or giving the appearance of reality [syn: {realization}, {realisation}, {actualisation}]
actualize
1: make real or concrete; give reality or substance to; "our ideas must be substantiated into actions" [syn: {realize}, {realise}, {actualise}, {substantiate}] 2: represent or describe realistically [...
actualized
1: changed from potential to actual; "saw his worst fears actualized" [syn: {actualised}]
actually
1: in actual fact; "to be nominally but not actually independent"; "no one actually saw the shark"; "large meteorites actually come from the asteroid belt" [syn: {really}] 2: used to imply that one wo...
actuarial
1: of or relating to the work of an actuary
actuarial table
1: a table of statistical data [syn: {statistical table}]
actuary
1: someone versed in the collection and interpretation of numerical data (especially someone who uses statistics to calculate insurance premiums) [syn: {statistician}]
actuate
1: put in motion or move to act; "trigger a reaction"; "actuate the circuits" [syn: {trip}, {trigger}, {activate}, {set off}, {spark off}, {spark}, {trigger off}, {touch off}] 2: give an incentive for...
actuated
1: moved to action; "a man actuated by unworthy desired"
actuating
1: causing motion or action or change [syn: {activating(a)}, {actuating(a)}]
actuation
1: the act of propelling [syn: {propulsion}]
actuator
1: a mechanism that puts something into automatic action
actus reus
1: activity that transgresses moral or civil law; "he denied any wrongdoing" [syn: {wrongdoing}, {wrongful conduct}, {misconduct}]
acuate
1: ending in a sharp point [syn: {acute}, {sharp}, {needlelike}]
acuity
1: sharpness of vision; the visual ability to resolve fine detail (usually measured by a Snellen chart) [syn: {visual acuity}, {sharp-sightedness}] 2: a quick and penetrating intelligence; "he argued ...
Acular
1: nonsteroidal anti-inflammatory drug (trade names Acular and Toradol) that is administered only intramuscularly [syn: {ketorolac tromethamine}, {Toradol}]
aculea
1: small spiny outgrowth on the wings of certain insects
aculeate
1: having or resembling a stinger or barb; "aculeate insects such as bees and wasps" [syn: {aculeated}]
aculeated
1: having or resembling a stinger or barb; "aculeate insects such as bees and wasps" [syn: {aculeate}]
aculeus
1: a stiff sharp-pointed plant process 2: a sharp-pointed process especially a sting of a hymenopterous insect
acumen
1: a tapering point 2: shrewdness shown by keen insight [syn: {insightfulness}]
acuminate
1: of a leaf shape; narrowing to a slender point v : make sharp or acute; taper; make (something) come to a point
acuminate leaf
1: narrowing to a slender point
acupressure
1: treatment of symptoms by applying pressure with the fingers to specific pressure points on the body [syn: {G-Jo}, {shiatsu}]
acupuncture
1: treatment of pain or disease by inserting the tips of needles at specific points on the skin [syn: {stylostixis}]
acute
1: having or experiencing a rapid onset and short but severe course; "acute appendicitis"; "the acute phase of the illness"; "acute patients" [ant: {chronic}] 2: extremely sharp or intense; "acute pai...
acute accent
1: a mark (') placed above a vowel to indicate pronunciation [syn: {acute}, {ague}]
acute angle
1: an angle less than 90 degrees but more than 0 degrees
acute anterior poliomyelitis
1: an acute viral disease marked by inflammation of nerve cells of the brain stem and spinal cord [syn: {poliomyelitis}, {polio}, {infantile paralysis}]
acute brain disorder
1: any disorder (as sudden confusion or disorientation) in an otherwise normal person that is due to reversible (temporary) impairment of brain tissues (as by head injuries or drugs or infection) [syn...
acute gastritis
1: gastritis caused by ingesting an irritant (as too much aspirin)
acute glaucoma
1: glaucoma in which the iris blocks the outflow of aqueous humor [syn: {angle-closure glaucoma}]
acute glossitis
1: glossitis resulting from injury or infection and characterized by swelling and pain
acute hemorrhagic encephalitis
1: encephalitis that resembles apoplexy due to blood extravasation
acute inclusion body encephalitis
1: common form of acute encephalitis caused by herpes simplex 1; usually affects the temporal and frontal lobes [syn: {herpes simplex encephalitis}, {herpes encephalitis}]
acute kidney failure
1: renal failure associated with burns or other trauma or with acute infection or obstruction of the urinary tract [syn: {acute renal failure}]
acute leukemia
1: rapidly progressing leukemia
acute lymphoblastic leukemia
1: acute leukemia characterized by proliferation of immature lymphoblast-like cells in bone marrow, lymph nodes, spleen, and blood; most common in children [syn: {acute lymphocytic leukemia}]
acute lymphocytic leukemia
1: acute leukemia characterized by proliferation of immature lymphoblast-like cells in bone marrow, lymph nodes, spleen, and blood; most common in children [syn: {acute lymphoblastic leukemia}]
acute myelocytic leukemia
1: acute leukemia characterized by proliferation of granular leukocytes; most common in adolescents and young adults [syn: {acute myeloid leukemia}]
acute myeloid leukemia
1: acute leukemia characterized by proliferation of granular leukocytes; most common in adolescents and young adults [syn: {acute myelocytic leukemia}]
acute organic brain syndrome
1: any disorder (as sudden confusion or disorientation) in an otherwise normal person that is due to reversible (temporary) impairment of brain tissues (as by head injuries or drugs or infection) [syn...
acute pyelonephritis
1: pyelonephritis resulting from the spread of a bladder infection
acute renal failure
1: renal failure associated with burns or other trauma or with acute infection or obstruction of the urinary tract [syn: {acute kidney failure}]
acute schizophrenic episode
1: schizophrenia of abrupt onset and relatively short duration (a few weeks or months) [syn: {reactive schizophrenia}]
acute triangle
1: a triangle whose interior angles are all acute [syn: {acute-angled triangle}]
acute-angled triangle
1: a triangle whose interior angles are all acute [syn: {acute triangle}]
acutely
1: in an acute manner; "she pitied her sister acutely"; "acutely aware" 2: having a rapid onset; "an acutely debilitating virus" [ant: {chronically}]
acuteness
1: a quick and penetrating intelligence; "he argued with great acuteness"; "I admired the keenness of his mind" [syn: {acuity}, {sharpness}, {keenness}] 2: the quality of having a sharp edge or point ...
acyclic
1: botany; not cyclic; especially having parts arranged in spirals rather than whorls [ant: {cyclic}] 2: chemistry; not cyclic; having an open chain structure [syn: {open-chain}] [ant: {cyclic}]
acyclovir
1: an oral antiviral drug (trade name Zovirax) used to treat genital herpes; does not cure the disease but relieves the symptoms [syn: {Zovirax}]
acyl
1: any group or radical of the form RCO- where R is an organic group; "an example of the acyl group is the acetyl group" [syn: {acyl group}]
acyl anhydrides
1: organic compounds that react with water to form an acid [syn: {acid anhydrides}]
acyl group
1: any group or radical of the form RCO- where R is an organic group; "an example of the acyl group is the acetyl group" [syn: {acyl}]
acyl halide
1: organic compounds containing the group -COX where X is a halogen atom [syn: {acid halide}]
acylation
1: the process of introducing an acyl group into a compound
acylglycerol
1: an ester of glycerol and fatty acids that occurs naturally as fats and fatty oils; "fresh fats contain glycerides of fatty acids and very little free acid" [syn: {glyceride}]
ad
1: a public promotion of some product or service [syn: {advertisement}, {advertizement}, {advertising}, {advertizing}, {advert}] adv : in the Christian era; used before dates after the supposed year C...
ad agency
1: an agency that designs advertisement to call public attention to its clients [syn: {advertising agency}]
ad blitz
1: an organized program of advertisements [syn: {advertising campaign}, {ad campaign}]
ad campaign
1: an organized program of advertisements [syn: {advertising campaign}, {ad blitz}]
ad hoc
1: often improvised or impromptu; "an ad hoc committee meeting" 2: for or concerned with one specific purpose; "a coordinated policy instead of ad hoc decisions" adv : for one specific case; "they wer...
ad hominem
1: appealing to personal considerations (rather than to fact or reason); "ad hominem arguments"
ad infinitum
1: to infinity; without or seemingly without limit; "talked on and on ad infinitum"
ad interim
1: for an intervening time; temporarily; "elected to serve ad interim"
ad lib
1: without advance preparation; "he spoke ad lib" [syn: {ad libitum}, {spontaneously}, {impromptu}]
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