Copy of `Princeton University - WordNet - a lexical database for the English language`

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Princeton University - WordNet - a lexical database for the English language Category: General Date & country: 27/01/2008, USA Words: 85192

acrophobic
adjective suffering from acrophobia; abnormally afraid of high places

acrophony
noun naming a letter of the alphabet by using a word whose initial sound is the sound represented by that letter

acropolis
noun the citadel in ancient Greek towns

Acropora
genus Acropora noun coelenterate genus of order Madreporaria, including staghorn corals

acroscopic
adjective facing or on the side toward the apex

acrosome
noun a process at the anterior end of a sperm cell that produces enzymes to facilitate penetration of the egg

across
crosswise adverb transversely; `the marble slabs were cut across`

across the board
adverb including all; `we got a pay raise across the board`

across-the-board
all-embracing adjective broad in scope or content; `across-the-board pay increases`; `an all-embracing definition`; `blanket sanctions against human-rights violators`; `an invention with broad applications`; `a panoptic study of Soviet nationality`- T.G.Winner; `granted him wide powers`

Acrostichum
genus Acrostichum noun in some classification systems placed in family Polypodiaceae

Acrostichum aureum
noun stout tropical swamp fern (especially tropical America) having large fronds with golden yellow sporangia covering the undersides

acrylamide
noun a white crystalline amide of propenoic acid can damage the nervous system and is carcinogenic in laboratory animals; `they claimed that acrylamide is produced when certain carbohydrates are baked or fried at high temperatures`

acrylic
noun a synthetic fabric

acrylic
noun used especially by artists

acrylic fiber
noun polymerized from acrylonitrile

acrylic paint
noun used especially by artists

acrylonitrile-butadiene-styrene
ABS noun any of a class of composite plastics used to make car bodies and cases for computers and other appliances

act
noun a subdivision of a play or opera or ballet

act
bit noun a short theatrical performance that is part of a longer program; `he did his act three times every evening`; `she had a catchy little routine`; `it was one of the best numbers he ever did`

act as
verb function as or act like; `This heap of stones will act as a barrier`

act as
verb pretend to have certain qualities or state of mind; `He acted the idiot`; `She plays deaf when the news are bad`

act involuntarily
act reflexively verb act in an uncontrolled manner

act of God
force majeure noun a natural and unavoidable catastrophe that interrupts the expected course of events; `he discovered that his house was not insured against acts of God`

act up
verb make itself felt as a recurring pain; `My arthritis is acting up again`

actable
adjective capable of being acted; suitable for the stage; `an actable scene`

Actaea
genus Actaea noun baneberry

Actias
genus Actias noun luna moths

Actifed
noun trade name for a drug containing an antihistamine and a decongestant; used to treat upper respiratory conditions and minor allergies

actin
noun one of the proteins into which actomyosin can be split; can exist in either a globular or a fibrous form

actinal
adjective (of radiate organisms) located on the surface or end on which the mouth is situated

acting
playing 2 playacting noun the performance of a part or role in a drama

acting out
noun a (usually irritating) impulsive and uncontrollable outburst by a problem child or a neurotic adult

acting(a)
adjective serving temporarily especially as a substitute; `the acting president`

Actinia
genus Actinia noun a genus of sea anemone common in rock pools

actinia
actiniarian noun any sea anemone or related animal

actinian
actiniarian noun any sea anemone or related animal

Actiniaria
order Actiniaria noun sea anemones

actinic
adjective relating to or exhibiting actinism

actinic dermatitis
noun dermatitis caused exposure to sunlight

actinic keratosis
noun an overgrowth of skin layers resulting from extended exposure to the sun

actinic radiation
actinic ray noun electromagnetic radiation that can produce photochemical reactions

actinide series
noun (chemistry) a series of 15 radioactive elements with increasing atomic numbers from actinium to lawrencium

Actinidia
genus Actinidia noun small Asiatic woody vine bearing many-seeded fruit

Actinidiaceae
family Actinidiaceae noun tropical trees or shrubs or woody vines

Actiniopteris
genus Actiniopteris noun terrestrial ferns of tropical Asia and Africa

actinism
noun the property of radiation that enables it to produce photochemical effects

actinium
Ac noun a radioactive element of the actinide series; found in uranium ores

actinoid
adjective having a radial form; `starfish are actinoid--that is, they are radially symmetrical`

actinolite
noun a green mineral of the amphibole group; calcium magnesium iron silicate

Actinomeris
genus Actinomeris noun used in some classification systems for plants now included in genus Verbesina

actinometer
noun an instrument for measuring the intensity of electromagnetic radiation (usually by the photochemical effect)

actinometric
actinometrical adjective of or related to actinometry

actinometry
noun measuring the intensity of electromagnetic radiation (especially of the sun`s rays)

actinomorphic
actinomorphous adjective capable of division into symmetrical halves by any longitudinal plane passing through the axis

actinomyces
noun soil-inhabiting saprophytes and disease-producing plant and animal parasites

Actinomycetaceae
family Actinomycetaceae noun filamentous anaerobic bacteria

actinomycetal
actinomycetous adjective of or belonging to the actinomycetes

Actinomycetales
order Actinomycetales noun filamentous or rod-shaped bacteria

actinomycete
noun any bacteria (some of which are pathogenic for humans and animals) belonging to the order Actinomycetales

actinomycin
noun any of various red antibiotics isolated from soil bacteria

actinomycosis
noun disease of cattle that can be transmitted to humans; results from infection with actinomycetes; characterized by hard swellings that exude pus through long sinuses

actinomycotic
adjective of or related to actinomycosis infection

Actinomyxidia
order Actinomyxidia noun parasites of worms

actinomyxidian
noun parasites of worms

actinopod
noun protozoa having stiff rodlike radiating pseudopods

Actinopoda
subclass Actinopoda noun heliozoans; radiolarians

action
noun the series of events that form a plot; `his novels always have a lot of action`

action officer
noun the case officer designated to perform an act during a clandestine operation (especially in a hostile area)

action potential
noun the local voltage change across the cell wall as a nerve impulse is transmitted

action spectrum
noun the efficiency with which electromagnetic radiation produces a photochemical reaction plotted as a function of the wavelength of the radiation

actionable
adjective affording grounds for legal action; `slander is an actionable offense`

Actitis
genus Actitis noun a genus of Scolopacidae

Actium
noun the naval battle in which Antony and Cleopatra were defeated by Octavian`s fleet under Agrippa in 31 BC

activate
verb make active or more active; `activate an old file`

activate
verb aerate (sewage) so as to favor the growth of organisms that decompose organic matter

activated
excited adjective (of e.g. a molecule) made reactive or more reactive

activated carbon
activated charcoal noun powdered or granular carbon used for purifying by adsorption; given orally (as a slurry) it is an antidote for some kinds of poisons

activating agent
noun (mineral extraction) a surface-active chemical used in flotation process to increase the attraction to a specific mineral

activating(a)
actuating(a) adjective causing motion or action or change

activation
noun stimulation of activity in an organism or chemical

activation energy
energy of activation noun 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 reaction`

activator
noun (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

active
alive(p) adjective in operation; `keep hope alive`; `the tradition was still alive`; `an active tradition`

active agent
active noun chemical agent capable of activity

active air defense
noun air defense by the use aircraft or missiles or artillery or electronic countermeasures

active application
noun an application that is currently running and in the foreground

active birth
noun childbirth during which the mother is encouraged to be an active participant

active citizen
noun a citizen who takes an active role in the community (as in crime prevention and neighborhood watch)

active immunity
noun a form of acquired immunity in which the body produces its own antibodies against disease-causing antigens

active matrix screen
noun a type of LCD screen used for some portable computers; there is a separate circuit for each pixel

active placebo
noun 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
noun the part of an enzyme or antibody where the chemical reaction occurs

active transport
noun transport of a substance (as a protein or drug) across a cell membrane against the concentration gradient; requires an expenditure of energy

active trust
noun a trust in which the trustee must perform certain duties

active voice
active noun 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`

actively
adverb in an active manner; `he participated actively in the war`

activeness
activity noun the trait of being active; moving or acting rapidly and energetically; `the level of activity declines with age`

activism
noun a policy of taking direct and militant action to achieve a political or social goal

activist
activistic adjective advocating or engaged in activism

activity
noun any specific behavior; `they avoided all recreational activity`