| anathematization | (noun) the formal act of pronouncing (someone or something) accursed | Synonyms: anathematisation |
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| ancestor | (noun) someone from whom you are descended (but usually more remote than a grandparent) | Synonyms: antecedent, ascendant, ascendent, root |
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| 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 |
| anchorage | (noun) the act of anchoring | - |
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| (noun) place for vessels to anchor | Synonyms: anchorage ground |
| (noun) a fee for anchoring | - |
| (noun) the condition of being secured to a base | - |
| (noun) the provision of a sense of security or steadfastness | - |
| anchorite | (noun) one retired from society for religious reasons | Synonyms: hermit |
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| anchorperson | (noun) a television reporter who coordinates a broadcast to which several correspondents contribute | Synonyms: anchor, anchorman |
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| ancient | (noun) a person who lived in ancient times | - |
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| (noun) a very old person | Synonyms: antediluvian |
| ancientness | (noun) extreme oldness | Synonyms: antiquity |
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| ancients | (noun) people who lived in times long past (especially during the historical period before the fall of the Roman Empire in western Europe) | - |
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| andante | (noun) a musical composition or musical passage to be performed moderately slow | - |
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| (noun) a moderately slow tempo (a walking pace) | - |
| andelmin | (noun) any of several tropical American trees of the genus Andira | Synonyms: angelim |
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| andesite | (noun) a dark grey volcanic rock | - |
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| andradite | (noun) a garnet consisting of calcium iron silicate and having any color ranging from yellow and green to brown and black; used as gemstone | - |
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| andrena | (noun) a bee that is a member of the genus Andrena | Synonyms: andrenid, mining bee |
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| andrenid | (noun) a bee that is a member of the genus Andrena | Synonyms: andrena, mining bee |
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| androecium | (noun) a male gametoecium | - |
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| androgen | (noun) male sex hormone that is produced in the testes and responsible for typical male sexual characteristics | Synonyms: androgenic hormone |
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| androgenesis | (noun) male parthenogenesis in which the embryo contains only paternal chromosomes due to the failure of the egg nucleus to participate in fertilization | Synonyms: androgeny |
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| androgeny | (noun) male parthenogenesis in which the embryo contains only paternal chromosomes due to the failure of the egg nucleus to participate in fertilization | Synonyms: androgenesis |
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| androgyne | (noun) one having both male and female sexual characteristics and organs; at birth an unambiguous assignment of male or female cannot be made | Synonyms: epicene, epicene person, gynandromorph, hermaphrodite, intersex |
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| andromeda | (noun) any of several shrubs of the genus Andromeda having leathery leaves and clusters of small flowers | - |
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| (noun) broad-leaved evergreen Asiatic shrub with glossy leaves and drooping clusters of white flowers | Synonyms: Japanese andromeda, lily-of-the-valley tree, Pieris japonica |
| androsterone | (noun) an androgenic hormone that is less active than testosterone | - |
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| anecdotalism | (noun) The property of being related to short accounts of real incidents or persons, often humorous or interesting. | - |
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| anecdote | (noun) short account of an incident (especially a biographical one) | - |
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| anecdotist | (noun) a person skilled in telling anecdotes | Synonyms: raconteur |
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| anemia | (noun) a deficiency of red blood cells | Synonyms: anaemia |
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| (noun) a lack of vitality | Synonyms: anaemia |
| anemoclinometer | (noun) A type of instrument which measures the inclination of the wind to the horizontal plane. | - |
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| anemograph | (noun) An instrument which records wind velocities. | - |
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| anemography | (noun) recording anemometrical measurements | - |
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| anemometer | (noun) a gauge for recording the speed and direction of wind | Synonyms: wind gage, wind gauge |
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| anemometry | (noun) measuring wind speed and direction | - |
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| anemone | (noun) marine polyps that resemble flowers but have oral rings of tentacles; differ from corals in forming no hard skeleton | Synonyms: sea anemone |
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| (noun) any woodland plant of the genus Anemone grown for its beautiful flowers and whorls of dissected leaves | Synonyms: windflower |
| anencephalia | (noun) a defect in brain development resulting in small or missing brain hemispheres | Synonyms: anencephaly |
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| anencephaly | (noun) a defect in brain development resulting in small or missing brain hemispheres | Synonyms: anencephalia |
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| anergy | (noun) reduction or lack of an immune response to a specific antigen | - |
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| (noun) inactivity and lack of energy | - |
| aneroid | (noun) a barometer that measures pressure without using fluids | Synonyms: aneroid barometer |
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| anesthesia | (noun) loss of bodily sensation with or without loss of consciousness | Synonyms: anaesthesia |
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| anesthesiologist | (noun) a specialist who administers an anesthetic to a patient before he is treated | Synonyms: anaesthetist, anesthetist |
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| anesthesiology | (noun) the branch of medical science that studies and applies anesthetics | - |
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| anesthetic | (noun) a drug that causes temporary loss of bodily sensations | Synonyms: anaesthetic, anaesthetic agent, anesthetic agent |
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| anesthetist | (noun) a specialist who administers an anesthetic to a patient before he is treated | Synonyms: anaesthetist, anesthesiologist |
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| anesthyl | (noun) a mixture of methyl and ethyl chloride; sprayed on as a local anesthetic | - |
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| 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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| anethole | (noun) an organic compound that is widely used as a flavoring substance. | Synonyms: anise camphor |
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| aneuploidy | (noun) an abnormality involving a chromosome number that is not an exact multiple of the haploid number (one chromosome set is incomplete) | - |
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| aneurin | (noun) a B vitamin that prevents beriberi; maintains appetite and growth | Synonyms: antiberiberi factor, thiamin, thiamine, vitamin B1 |
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| aneurism | (noun) a cardiovascular disease characterized by a saclike widening of an artery resulting from weakening of the artery wall | Synonyms: aneurysm |
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| aneurysm | (noun) a cardiovascular disease characterized by a saclike widening of an artery resulting from weakening of the artery wall | Synonyms: aneurism |
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| angel | (noun) spiritual being attendant upon God | - |
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| (noun) someone who provides financial support for some venture | Synonyms: backer |
| (noun) person of exceptional holiness | Synonyms: holy man, holy person, saint |
| angelfish | (noun) sharks with broad flat bodies and winglike pectoral fins but that swim the way sharks do | Synonyms: angel shark, monkfish, Squatina squatina |
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| (noun) a butterfly fish of the genus Pomacanthus | - |
| (noun) deep-bodied disk-shaped food fish of warmer western Atlantic coastal waters | Synonyms: Chaetodipterus faber, spadefish |
| angelica | (noun) aromatic stems or leaves or roots of Angelica Archangelica | - |
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| (noun) candied stalks of the angelica plant | - |
| (noun) any of various tall and stout herbs of the genus Angelica having pinnately compound leaves and small white or greenish flowers in compound umbels | Synonyms: angelique |
| angelim | (noun) any of several tropical American trees of the genus Andira | Synonyms: andelmin |
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| angelique | (noun) any of various tall and stout herbs of the genus Angelica having pinnately compound leaves and small white or greenish flowers in compound umbels | Synonyms: angelica |
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| angelology | (noun) the branch of theology that is concerned with angels | - |
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| angelus | (noun) the sound of a bell rung in Roman Catholic churches to announce the time when the Angelus should be recited | Synonyms: angelus bell |
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| anger | (noun) belligerence aroused by a real or supposed wrong (personified as one of the deadly sins) | Synonyms: ira, ire, wrath |
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| (noun) a strong emotion; a feeling that is oriented toward some real or supposed grievance | Synonyms: choler, ire |
| (noun) the state of being angry | Synonyms: angriness |
| angioedema | (noun) recurrent large circumscribed areas of subcutaneous edema; onset is sudden and it disappears within 24 hours; seen mainly in young women, often as an allergic reaction to food or drugs | Synonyms: atrophedema, giant hives, periodic edema, Quincke's edema |
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| angiogenesis | (noun) the formation of new blood vessels | - |
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| angiohemophilia | (noun) a form of hemophilia discovered by Erik von Willebrand; a genetic disorder that is inherited as an autosomal recessive trait; characterized by a deficiency of the coagulation factor and by mucosal bleeding | Synonyms: vascular hemophilia, von Willebrand's disease |
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| angiopteris | (noun) highly variable species of very large primitive ferns of the Pacific tropical areas with high rainfall | Synonyms: Angiopteris evecta, giant fern |
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| angioscope | (noun) a modified microscope used to study capillary vessels | - |
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| angiosperm | (noun) plants having seeds in a closed ovary | Synonyms: flowering plant |
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| angiotelectasia | (noun) dilation and enlargement of arterioles | - |
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| angiotensin | (noun) any of several vasoconstrictor substances (trade name Hypertensin) that cause narrowing of blood vessels | Synonyms: angiotonin, Hypertensin |
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| angle | (noun) a biased way of looking at or presenting something | Synonyms: slant |
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| (noun) the space between two lines or planes that intersect; the inclination of one line to another; measured in degrees or radians | - |
| angledozer | (noun) a bulldozer with an angled moldboard to push earth to one side | - |
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| angler | (noun) fishes having large mouths with a wormlike filament attached for luring prey | Synonyms: allmouth, angler fish, anglerfish, goosefish, Lophius Americanus, lotte, monkfish |
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| (noun) a fisherman who uses a hook and line | Synonyms: troller |
| (noun) a scheming person; someone who schemes to gain an advantage | - |
| anglerfish | (noun) fishes having large mouths with a wormlike filament attached for luring prey | Synonyms: allmouth, angler, angler fish, goosefish, Lophius Americanus, lotte, monkfish |
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| anglewing | (noun) nymphalid butterfly having angular notches on the outer edges of the forewings | - |
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| angleworm | (noun) terrestrial worm that burrows into and helps aerate soil; often surfaces when the ground is cool or wet; used as bait by anglers | Synonyms: crawler, dew worm, earthworm, fishing worm, fishworm, nightcrawler, nightwalker, red worm, wiggler |
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| anglophile | (noun) an admirer of England and things English | Synonyms: anglophil |
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| anglophobe | (noun) a person who hates England and everything English | - |
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| angrecum | (noun) any of various spectacular orchids of the genus Angraecum having dark green leathery leaves and usually nocturnally scented white or ivory flowers | - |
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| angriness | (noun) the state of being angry | Synonyms: anger |
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| anhedonia | (noun) an inability to experience pleasure | - |
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| anhydride | (noun) a compound formed from one or more other compounds in a reaction resulting in removal of water | - |
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| aniline | (noun) oily poisonous liquid amine obtained from nitrobenzene and used to make dyes and plastics and medicines | Synonyms: aminobenzine, aniline oil, phenylamine |
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| animadversion | (noun) harsh criticism or disapproval | Synonyms: censure |
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| animalcule | (noun) microscopic organism such as an amoeba or paramecium | Synonyms: animalculum |
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| animateness | (noun) the property of being animated; having animal life as distinguished from plant life | Synonyms: aliveness, liveness |
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| anime | (noun) a style of animation developed in Japan, characterized by stylized colorful art and often adult themes | - |
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| (noun) a hard copal derived from an African tree | Synonyms: Zanzibar copal |
| (noun) any of various resins or oleoresins | Synonyms: gum anime |
| anise | (noun) liquorice-flavored seeds, used medicinally and in cooking and liquors | Synonyms: anise seed, aniseed |
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| (noun) native to Egypt but cultivated widely for its aromatic seeds and the oil from them used medicinally and as a flavoring in cookery | Synonyms: anise plant, Pimpinella anisum |
| aniseed | (noun) liquorice-flavored seeds, used medicinally and in cooking and liquors | Synonyms: anise, anise seed |
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| aniseikonia | (noun) visual defect in which the shape and size of an ocular image differ in the two eyes | - |
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| anisette | (noun) liquorice-flavored usually colorless sweet liqueur made from aniseed | Synonyms: anisette de Bordeaux |
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| anisogamete | (noun) either of a pair of unlike gametes especially those unlike in size | - |
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| anisometropia | (noun) difference in the refractive power of the two eyes | - |
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| ankle | (noun) a gliding joint between the distal ends of the tibia and fibula and the proximal end of the talus | Synonyms: ankle joint, articulatio talocruralis, mortise joint |
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| anklebone | (noun) the bone in the ankle that articulates with the leg bones to form the ankle joint | Synonyms: astragal, astragalus, talus |
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| anklet | (noun) an ornament worn around the ankle | Synonyms: ankle bracelet |
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| (noun) a sock that reaches just above the ankle | Synonyms: anklets, bobbysock, bobbysocks |
| (noun) a shoe for a child or woman that has a strap around the ankle | - |
| anklets | (noun) a sock that reaches just above the ankle | Synonyms: anklet, bobbysock, bobbysocks |
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| anlage | (noun) an organ in its earliest stage of development; the foundation for subsequent development | Synonyms: primordium |
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| annealing | (noun) hardening something by heat treatment | Synonyms: tempering |
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| annelid | (noun) worms with cylindrical bodies segmented both internally and externally | Synonyms: annelid worm, segmented worm |
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| annex | (noun) an addition that extends a main building | Synonyms: annexe, extension, wing |
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| annexa | (noun) accessory or adjoining anatomical parts or appendages to an organ (especially of the embryo) | Synonyms: adnexa |
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| annexation | (noun) the formal act of acquiring something (especially territory) by conquest or occupation | - |
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| (noun) incorporation by joining or uniting | Synonyms: appropriation |
| annexe | (noun) an addition that extends a main building | Synonyms: annex, extension, wing |
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