| abiotrophy | (noun) a loss of vitality and a degeneration of cells and tissues not due to any apparent injury | - |
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| abstract | (adjective) existing only in the mind; separated from embodiment | - |
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| (adjective) not representing or imitating external reality or the objects of nature | Synonyms: abstractionist, nonfigurative, nonobjective |
| (adjective) dealing with a subject in the abstract without practical purpose or intention | - |
| (noun) a concept or idea not associated with any specific instance | Synonyms: abstraction |
| (noun) a sketchy summary of the main points of an argument or theory | Synonyms: outline, precis, synopsis |
| (verb) consider a concept without thinking of a specific example; consider abstractly or theoretically | - |
| (verb) consider apart from a particular case or instance | - |
| (verb) give an abstract (of) | - |
| (verb) make off with belongings of others | Synonyms: cabbage, filch, hook, lift, nobble, pilfer, pinch, purloin, snarf, sneak, swipe |
| abstracted | (adjective) lost in thought; showing preoccupation | Synonyms: absent, absentminded, scatty |
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| abstractedly | (adverb) in an absentminded or preoccupied manner | Synonyms: absently, absentmindedly, inattentively |
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| abstractedness | (noun) preoccupation with something to the exclusion of all else | Synonyms: abstraction |
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| abstracter | (noun) one who makes abstracts or summarizes information | Synonyms: abstractor |
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| abstraction | (noun) a general concept formed by extracting common features from specific examples | Synonyms: abstract entity |
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| (noun) the act of withdrawing or removing something | - |
| (noun) an abstract painting | - |
| (noun) a concept or idea not associated with any specific instance | Synonyms: abstract |
| (noun) preoccupation with something to the exclusion of all else | Synonyms: abstractedness |
| (noun) the process of formulating general concepts by abstracting common properties of instances | Synonyms: generalisation, generalization |
| abstractionism | (noun) an abstract genre of art; artistic content depends on internal form rather than pictorial representation | Synonyms: abstract art |
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| (noun) a representation having no reference to concrete objects or specific examples | Synonyms: unrealism |
| abstractionist | (adjective) not representing or imitating external reality or the objects of nature | Synonyms: abstract, nonfigurative, nonobjective |
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| (noun) a painter of abstract pictures | Synonyms: abstract artist |
| abstractive | (adjective) of an abstracting nature or having the power of abstracting | - |
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| abstractly | (adverb) in abstract terms | - |
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| abstractness | (noun) the quality of being considered apart from a specific instance or object | - |
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| abstractor | (noun) one who makes abstracts or summarizes information | Synonyms: abstracter |
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| abstruse | (adjective) difficult to penetrate; incomprehensible to one of ordinary understanding or knowledge | Synonyms: deep, recondite |
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| abstrusely | (adverb) in a manner difficult to understand | - |
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| abstruseness | (noun) the quality of being unclear or abstruse and hard to understand | Synonyms: obscureness, obscurity, reconditeness |
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| (noun) wisdom that is recondite and abstruse and profound | Synonyms: abstrusity, profoundness, profundity, reconditeness |
| abstrusity | (noun) wisdom that is recondite and abstruse and profound | Synonyms: abstruseness, profoundness, profundity, reconditeness |
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| accipitrine | (adjective) of or relating to or belonging to the genus Accipiter (or to typical hawks) | - |
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| accoutre | (verb) provide with military equipment | Synonyms: accouter |
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| accoutred | (adjective) provided with necessary articles of equipment for a specialized purpose (especially military) | Synonyms: accoutered |
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| accoutrement | (noun) clothing that is worn or carried, but not part of your main clothing | Synonyms: accessory, accouterment |
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| acentric | (adjective) lacking a centromere | - |
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| (adjective) not centered or having no center | - |
| acidimetric | (adjective) involving or related to acidimetry | - |
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| acidimetry | (noun) volumetric analysis using standard solutions of acids to measure the amount of a base present | - |
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| acrocentric | (adjective) having a subterminal centromere | - |
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| acrylonitrile | (noun) a colorless liquid unsaturated nitrile made from propene | Synonyms: propenonitrile, vinyl cyanide |
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| actinometric | (adjective) of or related to actinometry | Synonyms: actinometrical |
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| actinometrical | (adjective) of or related to actinometry | Synonyms: actinometric |
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| actinometry | (noun) measuring the intensity of electromagnetic radiation (especially of the sun's rays) | - |
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| actress | (noun) a female actor | - |
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| administrable | (adjective) capable of being administered or managed | - |
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| administrate | (verb) work in an administrative capacity; supervise or be in charge of | Synonyms: administer |
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| administration | (noun) a method of tending to or managing the affairs of some group of people (especially the group's business affairs) | Synonyms: disposal |
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| (noun) the act of administering medication | Synonyms: giving medication |
| (noun) the act of meting out justice according to the law | Synonyms: judicature |
| (noun) the act of governing; exercising authority | Synonyms: governance, governing, government, government activity |
| (noun) the persons (or committees or departments etc.) who make up a body for the purpose of administering something | Synonyms: brass, establishment, governance, governing body, organisation, organization |
| (noun) the tenure of a president | Synonyms: presidency, presidential term |
| administrative | (adjective) of or relating to or responsible for administration | - |
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| administratively | (adverb) by or for an administrator | - |
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| administrator | (noun) someone who administers a business | Synonyms: decision maker |
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| (noun) the party appointed by a probate court to distribute the estate of someone who dies without a will or without naming an executor | - |
| (noun) someone who manages a government agency or department | Synonyms: executive |
| administrivia | (noun) the tiresome but essential details that must be taken care of and tasks that must be performed in running an organization | - |
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| adrenocorticotrophic | (adjective) stimulating or acting on the adrenal cortex | Synonyms: adrenocorticotropic |
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| adrenocorticotrophin | (noun) a hormone produced by the anterior pituitary gland that stimulates the adrenal cortex | Synonyms: ACTH, adrenocorticotrophic hormone, adrenocorticotropic hormone, adrenocorticotropin, corticotrophin, corticotropin |
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| adrenocorticotropic | (adjective) stimulating or acting on the adrenal cortex | Synonyms: adrenocorticotrophic |
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| adrenocorticotropin | (noun) a hormone produced by the anterior pituitary gland that stimulates the adrenal cortex | Synonyms: ACTH, adrenocorticotrophic hormone, adrenocorticotrophin, adrenocorticotropic hormone, corticotrophin, corticotropin |
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| aeolotropic | (adjective) having properties with different values along different axes | Synonyms: eolotropic |
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| airstream | (noun) a relatively well-defined prevailing wind | - |
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| (noun) the flow of air that is driven backwards by an aircraft propeller | Synonyms: backwash, race, slipstream, wash |
| airstrip | (noun) an airfield without normal airport facilities | Synonyms: flight strip, landing strip, strip |
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| alabastrine | (adjective) of or resembling alabaster | Synonyms: alabaster |
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| alastrim | (noun) a mild form of smallpox caused by a less virulent form of the virus | Synonyms: Cuban itch, Kaffir pox, milk pox, pseudosmallpox, pseudovariola, variola minor, West Indian smallpox, white pox |
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| albatross | (noun) large web-footed birds of the Southern Hemisphere having long narrow wings; noted for powerful gliding flight | Synonyms: mollymawk |
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| (noun) (figurative) something that hinders or handicaps | Synonyms: millstone |
| aldotetrose | (noun) A four-carbon aldose; for example, threose, erythrose. | - |
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| aldotriose | (noun) Any aldose having three carbon atoms; in reality, just glyceraldehyde. | - |
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| algometric | (adjective) of or related to algometry | Synonyms: algometrical |
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| algometrical | (adjective) of or related to algometry | Synonyms: algometric |
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| algometry | (noun) measuring sensitivity to pain or pressure | - |
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| alkalimetry | (noun) volumetric analysis using standard solutions of alkali to measure the amount of acid present | - |
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| allometric | (adjective) relating to or marked by allometry | - |
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| allometry | (noun) the study of the relative growth of a part of an organism in relation to the growth of the whole | - |
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| allopatric | (adjective) (of biological species or speciation) occurring in areas isolated geographically from one another | - |
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| allopatry | (noun) the occurrence of related organisms in separate geographical areas with no overlap | - |
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| allotrope | (noun) a structurally different form of an element | - |
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| allotropic | (adjective) of or related to or exhibiting allotropism | Synonyms: allotropical |
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| allotropical | (adjective) of or related to or exhibiting allotropism | Synonyms: allotropic |
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| allotropism | (noun) the phenomenon of an element existing in two or more physical forms | Synonyms: allotropy |
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| allotropy | (noun) the phenomenon of an element existing in two or more physical forms | Synonyms: allotropism |
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| alpestrine | (adjective) growing at high altitudes | Synonyms: subalpine |
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| alstroemeria | (noun) any of various South American plants of the genus Alstroemeria valued for their handsome umbels of beautiful flowers | - |
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| altostratus | (noun) a stratus cloud at an intermediate altitude of 2 or 3 miles | Synonyms: altostratus cloud |
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| altricial | (adjective) (of hatchlings) naked and blind and dependent on parents for food | - |
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| altruism | (noun) the quality of unselfish concern for the welfare of others | Synonyms: selflessness |
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| altruist | (noun) someone who makes charitable donations intended to increase human well-being | Synonyms: philanthropist |
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| altruistic | (adjective) showing unselfish concern for the welfare of others | Synonyms: selfless |
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| altruistically | (adverb) in an altruistic manner | Synonyms: selflessly |
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| ambidextrous | (adjective) equally skillful with each hand | Synonyms: two-handed |
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| (adjective) marked by deliberate deceptiveness especially by pretending one set of feelings and acting under the influence of another | Synonyms: deceitful, double-dealing, double-faced, double-tongued, duplicitous, Janus-faced, two-faced |
| ambidextrousness | (noun) the property of being equally skillful with each hand | Synonyms: ambidexterity |
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| ametria | (noun) congenital absence of the uterus | - |
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| ametropia | (noun) (ophthalmology) faulty refraction of light rays in the eye as in astigmatism or myopia | - |
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| ametropic | (adjective) of or relating to an abnormal condition of the eye in which visual images are not in focus on the retina | - |
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| aminotransferase | (noun) a class of transferases that catalyze transamination (that transfer an amino group from an amino acid to another compound) | Synonyms: aminopherase, transaminase |
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| amitriptyline | (noun) a tricyclic antidepressant drug (trade name Elavil) with serious side effects; interacts with many other medications | Synonyms: amitriptyline hydrochloride, Elavil |
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| amphitheatre | (noun) an oval large stadium with tiers of seats; an arena in which contests and spectacles are held | Synonyms: amphitheater, coliseum |
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| (noun) a sloping gallery with seats for spectators (as in an operating room or theater) | Synonyms: amphitheater |
| amphitheatric | (adjective) of or related to an amphitheater | Synonyms: amphitheatrical |
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| amphitheatrical | (adjective) of or related to an amphitheater | Synonyms: amphitheatric |
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| amphitropous | (adjective) (of a plant ovule) partly inverted; turned back 90 degrees on its stalk | - |
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| amyotrophia | (noun) progressive wasting of muscle tissues | Synonyms: amyotrophy |
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| amyotrophy | (noun) progressive wasting of muscle tissues | Synonyms: amyotrophia |
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| anastrophe | (noun) the reversal of the normal order of words | Synonyms: inversion |
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| anatropous | (adjective) (of a plant ovule) completely inverted; turned back 180 degrees on its stalk | Synonyms: inverted |
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| ancestral | (adjective) of or belonging to or inherited from an ancestor | - |
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| (adjective) inherited or inheritable by established rules (usually legal rules) of descent | Synonyms: hereditary, patrimonial, transmissible |
| ancestress | (noun) a woman ancestor | - |
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| ancestry | (noun) inherited properties shared with others of your bloodline | Synonyms: derivation, filiation, lineage |
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| (noun) the hereditary derivation of an individual | Synonyms: blood, blood line, bloodline, descent, line, line of descent, lineage, origin, parentage, pedigree, stemma, stock |
| anemometric | (adjective) pertaining to the measurement of wind speed and direction | Synonyms: anemometrical |
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| anemometrical | (adjective) pertaining to the measurement of wind speed and direction | Synonyms: anemometric |
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| anemometry | (noun) measuring wind speed and direction | - |
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| anestric | (adjective) of or relating to anestrus | Synonyms: anestrous, anoestrous |
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| anestrous | (adjective) (of lower mammals) not in a state of estrus; not in heat | - |
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| (adjective) of or relating to anestrus | Synonyms: anestric, anoestrous |
| anestrum | (noun) applies to nonhuman mammals: a state or interval of sexual inactivity between two periods of estrus | Synonyms: anestrus, anoestrum, anoestrus |
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| anestrus | (noun) applies to nonhuman mammals: a state or interval of sexual inactivity between two periods of estrus | Synonyms: anestrum, anoestrum, anoestrus |
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| angstrom | (noun) a metric unit of length equal to one ten billionth of a meter (or 0.0001 micron); used to specify wavelengths of electromagnetic radiation | Synonyms: A, angstrom unit |
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| animatronics | (noun) the construction of robots to look like animals (developed for Disneyland) | - |
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| anisometric | (adjective) having unsymmetrical parts or unequal dimensions or measurements | Synonyms: unsymmetrical |
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| anisometropia | (noun) difference in the refractive power of the two eyes | - |
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| anisometropic | (adjective) relating to a difference in the refractive power of the two eyes | - |
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