| advantageousness | (noun) the quality of being encouraging or promising of a successful outcome | Synonyms: favorableness, favourableness, positiveness, positivity, profitableness |
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| aeon | (noun) (Gnosticism) a divine power or nature emanating from the Supreme Being and playing various roles in the operation of the universe | Synonyms: eon |
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| (noun) an immeasurably long period of time | Synonyms: eon |
| (noun) the longest division of geological time | Synonyms: eon |
| alveolar | (noun) a consonant articulated with the tip of the tongue near the gum ridge | Synonyms: alveolar consonant, dental, dental consonant |
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| alveolitis | (noun) inflammation of the alveoli in the lungs caused by inhaling dust; with repeated exposure the condition may become chronic | - |
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| (noun) inflammation in the socket of a tooth; sometimes occurs after a tooth is extracted and a blood clot fails to form | Synonyms: dry socket |
| alveolus | (noun) a tiny sac for holding air in the lungs; formed by the terminal dilation of tiny air passageways | Synonyms: air cell, air sac |
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| (noun) a bony socket in the alveolar ridge that holds a tooth | Synonyms: tooth socket |
| antineoplastic | (noun) any of several drugs that control or kill neoplastic cells; used in chemotherapy to kill cancer cells; all have unpleasant side effects that may include nausea and vomiting and hair loss and suppression of bone marrow function | Synonyms: antineoplastic drug, cancer drug |
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| apotheosis | (noun) the elevation of a person (as to the status of a god) | Synonyms: deification, exaltation |
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| (noun) model of excellence or perfection of a kind; one having no equal | Synonyms: ideal, nonesuch, nonpareil, nonsuch, paragon, saint |
| archaeobacteria | (noun) considered ancient life forms that evolved separately from bacteria and blue-green algae | Synonyms: archaebacteria, archaebacterium, archeobacteria |
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| archaeologist | (noun) an anthropologist who studies prehistoric people and their culture | Synonyms: archeologist |
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| archaeology | (noun) the branch of anthropology that studies prehistoric people and their cultures | Synonyms: archeology |
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| archaeopteryx | (noun) extinct primitive toothed bird of the Jurassic period having a long feathered tail and hollow bones; usually considered the most primitive of all birds | Synonyms: Archaeopteryx lithographica, archeopteryx |
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| archaeornis | (noun) extinct primitive toothed bird with a long feathered tail and three free clawed digits on each wing | - |
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| archeobacteria | (noun) considered ancient life forms that evolved separately from bacteria and blue-green algae | Synonyms: archaebacteria, archaebacterium, archaeobacteria |
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| archeologist | (noun) an anthropologist who studies prehistoric people and their culture | Synonyms: archaeologist |
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| archeology | (noun) the branch of anthropology that studies prehistoric people and their cultures | Synonyms: archaeology |
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| archeopteryx | (noun) extinct primitive toothed bird of the Jurassic period having a long feathered tail and hollow bones; usually considered the most primitive of all birds | Synonyms: archaeopteryx, Archaeopteryx lithographica |
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| areola | (noun) small circular area such as that around the human nipple or an inflamed area around a pimple or insect bite | Synonyms: ring of color |
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| (noun) small space in a tissue or body part such as the area between veins on a leaf or an insect's wing | - |
| astereognosis | (noun) a loss of the ability to recognize objects by handling them | Synonyms: tactile agnosia |
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| aureole | (noun) an indication of radiant light drawn around the head of a saint | Synonyms: aura, gloriole, glory, halo, nimbus |
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| (noun) the outermost region of the sun's atmosphere; visible as a white halo during a solar eclipse | Synonyms: corona |
| autostereotype | (noun) the standardized mental picture held in common by members of a cultural group depicting an oversimplified image of themselves and their behaviour. | - |
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| aztreonam | (noun) an antibiotic (trade name Azactam) used against severe infections; has minimal side effects | Synonyms: Azactam |
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| bandoneon | (noun) a type of concertina popular in South America | - |
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| beauteousness | (noun) the quality of being good looking and attractive | Synonyms: comeliness, fairness, loveliness |
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| biogeography | (noun) dealing with the geographical distribution of animals and plants | - |
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| bludgeon | (noun) a club used as a weapon | - |
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| bludgeoner | (noun) an assailant who uses a bludgeon | - |
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| bounteousness | (noun) (literary) generosity evidenced by a willingness to give freely | Synonyms: bounty |
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| bourgeois | (noun) a member of the middle class | Synonyms: burgher |
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| (noun) a capitalist who engages in industrial commercial enterprise | Synonyms: businessperson |
| bourgeoisie | (noun) the social class between the lower and upper classes | Synonyms: middle class |
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| bracteole | (noun) a small bract | Synonyms: bractlet |
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| bromeosin | (noun) a red fluorescent dye resulting from the action of bromine on fluorescein; used in cosmetics and as a biological stain for studying cell structures | Synonyms: eosin |
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| businesspeople | (noun) people who transact business (especially business executives) | Synonyms: business people |
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| buteonine | (noun) any hawk of the genus Buteo | - |
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| calceolaria | (noun) any garden plant of the genus Calceolaria having flowers with large inflated slipper-shaped lower lip | Synonyms: slipperwort |
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| cameo | (noun) engraving or carving in low relief on a stone (as in a brooch or ring) | - |
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| chamaeleon | (noun) lizard of Africa and Madagascar able to change skin color and having a projectile tongue | Synonyms: chameleon |
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| chameleon | (noun) lizard of Africa and Madagascar able to change skin color and having a projectile tongue | Synonyms: chamaeleon |
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| (noun) a changeable or inconstant person | - |
| changeover | (noun) an event that results in a transformation | Synonyms: conversion, transition |
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| choreographer | (noun) someone who creates new dances | - |
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| choreography | (noun) a show involving artistic dancing | Synonyms: stage dancing |
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| (noun) the representation of dancing by symbols as music is represented by notes | - |
| (noun) a notation used by choreographers | - |
| cleome | (noun) any of various often strong-smelling plants of the genus Cleome having showy spider-shaped flowers | Synonyms: spiderflower |
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| closeout | (noun) a sale intended to dispose of all remaining stock | - |
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| contemporaneousness | (noun) the quality of being current or of the present | Synonyms: contemporaneity, modernism, modernity, modernness |
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| (noun) the quality of belonging to the same period of time | Synonyms: contemporaneity |
| coreopsis | (noun) any of numerous plants of the genus Coreopsis having a profusion of showy usually yellow daisylike flowers over long periods; North and South America | Synonyms: tick-weed, tickseed, tickweed |
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| courageousness | (noun) a quality of spirit that enables you to face danger or pain without showing fear | Synonyms: braveness, bravery, courage |
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| creole | (noun) a mother tongue that originates from contact between two languages | - |
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| creosol | (noun) a colorless to yellow aromatic liquid that is a constituent of creosote | - |
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| creosote | (noun) a colorless or yellowish oily liquid obtained by distillation of wood tar; used as an antiseptic | - |
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| (noun) a dark oily liquid obtained by distillation of coal tar; used as a preservative for wood | Synonyms: coal-tar creosote |
| curmudgeon | (noun) a crusty irascible cantankerous old person full of stubborn ideas | - |
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| curvaceousness | (noun) the quality of having a well-rounded body | Synonyms: shapeliness, voluptuousness |
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| daguerreotype | (noun) a photograph made by an early photographic process; the image was produced on a silver plate sensitized to iodine and developed in mercury vapor | - |
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| deodar | (noun) tall East Indian cedar having spreading branches with nodding tips; highly valued for its appearance as well as its timber | Synonyms: Cedrus deodara, deodar cedar, Himalayan cedar |
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| deodorant | (noun) a toiletry applied to the skin in order to mask unpleasant odors | Synonyms: deodourant |
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| deodourant | (noun) a toiletry applied to the skin in order to mask unpleasant odors | Synonyms: deodorant |
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| deossification | (noun) the loss of the mineral content of bone tissue | - |
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| deoxyadenosine | (noun) a nucleoside component of DNA; composed of adenosine and deoxyribose | - |
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| deoxycytidine | (noun) a nucleoside component of DNA; composed of cytosine and deoxyribose | Synonyms: cytidine |
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| deoxyephedrine | (noun) an amphetamine derivative (trade name Methedrine) used in the form of a crystalline hydrochloride; used as a stimulant to the nervous system and as an appetite suppressant | Synonyms: chalk, chicken feed, crank, glass, ice, meth, methamphetamine, methamphetamine hydrochloride, Methedrine, shabu, trash |
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| deoxyguanosine | (noun) a nucleoside component of DNA; composed of guanine and deoxyribose | Synonyms: guanosine |
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| deoxynucleotide | (noun) Any nucleotide that contains a deoxy sugar. | - |
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| deoxyribose | (noun) a sugar that is a constituent of nucleic acids | - |
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| deoxythymidine | (noun) a nucleoside component of DNA; composed of thymine and deoxyribose | Synonyms: thymidine |
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| dideoxycytosine | (noun) an antiviral drug used to combat HIV infection; a nucleoside analog reverse transcriptase inhibitor (NARTI) | Synonyms: ddC, DDC, zalcitabine |
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| dideoxyinosine | (noun) an antiviral drug used to combat HIV infection, a reverse transcriptase inhibitor | Synonyms: ddI, DDI, didanosine |
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| dromaeosaur | (noun) a kind of maniraptor | - |
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| dudgeon | (noun) a feeling of intense indignation (now used only in the phrase `in high dudgeon') | Synonyms: high dudgeon |
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| dungeon | (noun) the main tower within the walls of a medieval castle or fortress | Synonyms: donjon, keep |
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| (noun) a dark cell (usually underground) where prisoners can be confined | - |
| enfeoffment | (noun) under the feudal system, the deed by which a person was given land in exchange for a pledge of service | - |
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| eohippus | (noun) earliest horse; extinct primitive dog-sized four-toed Eocene animal | Synonyms: dawn horse |
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| eolith | (noun) a crude stone artifact (as a chipped flint); possibly the earliest tools | - |
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| eon | (noun) (Gnosticism) a divine power or nature emanating from the Supreme Being and playing various roles in the operation of the universe | Synonyms: aeon |
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| (noun) an immeasurably long period of time | Synonyms: aeon |
| (noun) the longest division of geological time | Synonyms: aeon |
| eonni | (noun) an older other woman, especially a sister, used by a female | - |
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| eoraptor | (noun) a theropod dinosaur of the genus Eoraptor | - |
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| eosin | (noun) a red fluorescent dye resulting from the action of bromine on fluorescein; used in cosmetics and as a biological stain for studying cell structures | Synonyms: bromeosin |
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| eosinopenia | (noun) a decrease in the number of eosinophils in the blood | - |
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| eosinophil | (noun) a leukocyte readily stained with eosin | Synonyms: eosinophile |
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| eosinophile | (noun) a leukocyte readily stained with eosin | Synonyms: eosinophil |
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| eosinophilia | (noun) a symptom of allergic states; increased eosinophils in the blood | - |
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| erroneousness | (noun) inadvertent incorrectness | Synonyms: error |
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| escutcheon | (noun) a shield; especially one displaying a coat of arms | Synonyms: scutcheon |
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| (noun) (nautical) a plate on a ship's stern on which the name is inscribed | - |
| (noun) a flat protective covering (on a door or wall etc) to prevent soiling by dirty fingers | Synonyms: finger plate, scutcheon |
| extraneousness | (noun) The state of not forming an essential or vital part. | Synonyms: extraneity |
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| (noun) unrelatedness by virtue of falling outside the matter at hand | - |
| fadeout | (noun) a slow or gradual disappearance | Synonyms: receding |
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| (noun) a gradual temporary loss of a transmitted signal due to electrical disturbances | - |
| feoff | (noun) a piece of land held under the feudal system | Synonyms: fief |
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| fibreoptics | (noun) the transmission of light signals via glass fibers | Synonyms: fiber optics, fiberoptics, fibre optics |
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| flageolet | (noun) a small fipple flute with four finger holes and two thumb holes | Synonyms: shepherd's pipe, treble recorder |
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| (noun) a French bean variety with light-colored seeds; usually dried | Synonyms: haricot |
| foreordination | (noun) (theology) being determined in advance; especially the doctrine (usually associated with Calvin) that God has foreordained every event throughout eternity (including the final salvation of mankind) | Synonyms: predestination, predetermination, preordination |
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| galleon | (noun) a large square-rigged sailing ship with three or more masts; used by the Spanish for commerce and war from the 15th to 18th centuries | - |
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| gaseousness | (noun) having the consistency of a gas | - |
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| geochemistry | (noun) the chemistry of the earth's crust | - |
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| geode | (noun) (mineralogy) a hollow rock or nodule with the cavity usually lined with crystals | - |
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| geodesic | (noun) (mathematics) the shortest line between two points on a mathematically defined surface (as a straight line on a plane or an arc of a great circle on a sphere) | Synonyms: geodesic line |
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| geodesy | (noun) the branch of geology that studies the shape of the earth and the determination of the exact position of geographical points | - |
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| geoduck | (noun) a large edible clam found burrowing deeply in sandy mud along the Pacific coast of North America; weighs up to six pounds; has siphons that can extend to several feet and cannot be withdrawn into the shell | - |
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| geographer | (noun) an expert on geography | - |
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| geographics | (noun) study of the earth's surface; includes people's responses to topography and climate and soil and vegetation | Synonyms: geography |
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| geography | (noun) study of the earth's surface; includes people's responses to topography and climate and soil and vegetation | Synonyms: geographics |
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| geologist | (noun) a specialist in geology | - |
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| geology | (noun) a science that deals with the history of the earth as recorded in rocks | - |
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| geomancer | (noun) one who practices geomancy | - |
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| geomancy | (noun) divination by means of signs connected with the earth (as points taken at random or the arrangement of particles thrown down at random or from the configuration of a region and its relation to another) | - |
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