| achondrite | (noun) a stony meteor lacking chondrules | - |
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| aconite | (noun) any of various usually poisonous plants of the genus Aconitum having tuberous roots and palmately lobed leaves and blue or white flowers | - |
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| actinolite | (noun) a green mineral of the amphibole group; calcium magnesium iron silicate | - |
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| adesite | (noun) dark greyish extrusive rock | - |
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| aerolite | (noun) a stony meteorite consisting of silicate minerals | - |
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| albite | (noun) a widely distributed feldspar that forms rocks | Synonyms: white feldspar |
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| alexandrite | (noun) a green variety of chrysoberyl used as a gemstone | - |
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| aliterate | (noun) a person who can read but is disinclined to derive information from literary sources | Synonyms: aliterate person |
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| alliteration | (noun) use of the same consonant at the beginning of each stressed syllable in a line of verse | Synonyms: beginning rhyme, head rhyme, initial rhyme |
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| alliterator | (noun) a speaker or writer who makes use of alliteration | - |
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| almandite | (noun) a deep red garnet consisting of iron aluminum silicate | Synonyms: almandine |
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| amblygonite | (noun) a white or grey mineral consisting of lithium aluminum phosphate; a source of lithium | - |
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| ammonite | (noun) one of the coiled chambered fossil shells of extinct mollusks | Synonyms: ammonoid |
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| amphibolite | (noun) a metamorphic rock composed chiefly of amphibole and plagioclase | - |
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| anchorite | (noun) one retired from society for religious reasons | Synonyms: hermit |
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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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| anorthite | (noun) rare plagioclastic feldspar occurring in many igneous rocks | - |
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| anthophyllite | (noun) a dark brown mineral of the amphibole group; magnesium iron silicate | - |
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| anthracite | (noun) a hard natural coal that burns slowly and gives intense heat | Synonyms: anthracite coal, hard coal |
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| anthropophagite | (noun) a person who eats human flesh | Synonyms: anthropophagus, cannibal, man-eater |
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| antimetabolite | (noun) an antineoplastic drug that inhibits the utilization of a metabolite | - |
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| apatite | (noun) a common complex mineral consisting of calcium fluoride phosphate or calcium chloride phosphate; a source of phosphorus | - |
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| aphanite | (noun) fine-grained homogeneous rock (such as basalt) containing minerals undetectable by the naked eye | - |
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| aplite | (noun) light-colored and fine-grained granitic rock consisting chiefly of quartz and feldspars | - |
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| appetite | (noun) a feeling of craving something | Synonyms: appetence, appetency |
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| appositeness | (noun) appropriateness for the occasion | Synonyms: aptness |
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| aragonite | (noun) a mineral form of crystalline calcium carbonate; dimorphic with calcite | - |
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| arbiter | (noun) someone chosen to judge and decide a disputed issue | Synonyms: arbitrator, umpire |
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| (noun) someone with the power to settle matters at will | Synonyms: supreme authority |
| archimandrite | (noun) the superior of an abbey of monks | Synonyms: abbot |
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| architect | (noun) someone who creates plans to be used in making something (such as buildings) | Synonyms: designer |
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| architectonics | (noun) the science of architecture | Synonyms: tectonics |
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| architecture | (noun) the profession of designing buildings and environments with consideration for their esthetic effect | - |
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| (noun) an architectural product or work | - |
| (noun) (computer science) the structure and organization of a computer's hardware or system software | Synonyms: computer architecture |
| (noun) the discipline dealing with the principles of design and construction and ornamentation of fine buildings | - |
| architeuthis | (noun) largest mollusk known about but never seen (to 60 feet long) | Synonyms: giant squid |
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| argentite | (noun) a valuable silver ore consisting of silver sulfide (Ag2S) | - |
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| argillite | (noun) a sedimentary rock differing from shale in being bound by silica and from slate in having no slate cleavages | - |
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| argyrodite | (noun) a rare steel-grey mineral consisting of silver and germanium and sulfur | - |
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| arsenopyrite | (noun) a silver-white or grey ore of arsenic | Synonyms: mispickel |
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| ascites | (noun) accumulation of serous fluid in peritoneal cavity | - |
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| augite | (noun) dark-green to black glassy mineral of the pyroxene group containing large amounts of aluminum and iron and magnesium | - |
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| austenite | (noun) a solid solution of ferric carbide or carbon in iron; cools to form pearlite or martensite | - |
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| azurite | (noun) blue carbonate of copper; blue malachite | - |
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| backbiter | (noun) one who attacks the reputation of another by slander or libel | Synonyms: defamer, libeler, maligner, slanderer, traducer, vilifier |
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| baddeleyite | (noun) a mineral consisting of zirconium oxide | - |
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| barite | (noun) a white or colorless mineral (BaSO4); the main source of barium | Synonyms: barium sulphate, barytes, heavy spar |
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| bastnaesite | (noun) a yellow-to-brown mineral that is a source of rare earth elements | Synonyms: bastnasite |
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| bastnasite | (noun) a yellow-to-brown mineral that is a source of rare earth elements | Synonyms: bastnaesite |
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| batholite | (noun) large mass of intrusive igneous rock believed to have solidified deep within the earth | Synonyms: batholith, pluton, plutonic rock |
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| bauxite | (noun) a clay-like mineral; the chief ore of aluminum; composed of aluminum oxides and aluminum hydroxides; used as an abrasive and catalyst | - |
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| bedlamite | (noun) an archaic term for a lunatic | - |
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| belemnite | (noun) a conical calcareous fossil tapering to a point at one end and with a conical cavity at the other end containing (when unbroken) a small chambered phragmocone from the shell of any of numerous extinct cephalopods of the family Belemnitidae | - |
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| bentonite | (noun) an absorbent aluminum silicate clay formed from volcanic ash | - |
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| biotite | (noun) dark brown to black mica found in igneous and metamorphic rock | - |
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| bite | (noun) the act of gripping or chewing off with the teeth and jaws | Synonyms: chomp |
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| (noun) a portion removed from the whole | - |
| (noun) a strong odor or taste property | Synonyms: pungency, raciness, sharpness |
| (noun) wit having a sharp and caustic quality | Synonyms: pungency |
| (noun) (angling) an instance of a fish taking the bait | - |
| (noun) a light informal meal | Synonyms: collation, snack |
| (noun) a small amount of solid food; a mouthful | Synonyms: bit, morsel |
| (noun) a wound resulting from biting by an animal or a person | - |
| (noun) a painful wound caused by the thrust of an insect's stinger into skin | Synonyms: insect bite, sting |
| biteplate | (noun) a removable dental appliance that is worn in the palate for diagnostic or therapeutic purposes | Synonyms: bite plate |
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| biter | (noun) someone who bites | - |
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| bitewing | (noun) a dental X-ray film that can be held in place by the teeth during radiography | - |
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| blatherskite | (noun) foolish gibberish | Synonyms: blather |
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| bobwhite | (noun) a popular North American game bird; named for its call | Synonyms: bobwhite quail, partridge |
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| bornite | (noun) a mineral consisting of sulfides of copper and iron that is found in copper deposits | Synonyms: peacock ore |
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| calcite | (noun) a common mineral consisting of crystallized calcium carbonate; a major constituent of limestone | - |
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| campsite | (noun) a site where people on holiday can pitch a tent | Synonyms: bivouac, campground, camping area, camping ground, camping site, encampment |
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| carnallite | (noun) a white or reddish mineral consisting of hydrous chlorides of potassium and magnesium; used as a fertilizer and as a source of potassium and magnesium | - |
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| carnotite | (noun) a yellow radioactive mineral; an ore of uranium and radium and vanadium | - |
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| cassiterite | (noun) a hard heavy dark mineral that is the chief source of tin | - |
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| catamite | (noun) a boy who submits to a sexual relationship with a man | - |
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| celestite | (noun) a mineral consisting of strontium sulphate | - |
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| cellulite | (noun) lumpy deposits of body fat especially on women's thighs etc. | - |
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| cementite | (noun) a chemical compound that is a constituent of steel and cast iron; very hard and brittle | Synonyms: iron carbide |
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| cenobite | (noun) a member of a religious order living in common | Synonyms: coenobite |
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| centiliter | (noun) a metric unit of volume equal to one hundredth of a liter | Synonyms: centilitre, cl |
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| cerussite | (noun) a mineral consisting of lead carbonate that is an important source of lead | Synonyms: white lead ore |
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| ceylonite | (noun) a dark-colored spinel containing iron | Synonyms: pleonaste |
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| chabasite | (noun) a group of minerals of the zeolite family consisting of a hydrous silicate of calcium and aluminum | Synonyms: chabazite |
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| chabazite | (noun) a group of minerals of the zeolite family consisting of a hydrous silicate of calcium and aluminum | Synonyms: chabasite |
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| chalcanthite | (noun) hydrated blue crystalline form of copper sulfate | Synonyms: blue copperas, blue stone, blue vitriol |
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| chalcocite | (noun) a heavy grey mineral that is an ore of copper | Synonyms: copper glance |
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| chalcopyrite | (noun) a yellow copper ore (CuFeS2) made up of copper and iron sulfide | Synonyms: copper pyrites |
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| chalybite | (noun) iron ore in the form of ferrous carbonate | Synonyms: siderite |
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| chamosite | (noun) a greenish grey or black silicate of iron and aluminum | - |
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| chapiter | (noun) the upper part of a column that supports the entablature | Synonyms: cap, capital |
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| chlorite | (noun) a generally green or black mineral; it occurs as a constituent of many rocks typically in the form of a flat crystal | - |
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| chondrite | (noun) a rock of meteoric origin containing chondrules | - |
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| chromite | (noun) a brownish-black mineral; the major source of chromium | - |
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| chrysolite | (noun) a brown or yellow-green olivine found in igneous and metamorphic rocks and used as a gemstone | - |
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| cite | (noun) a short note recognizing a source of information or of a quoted passage | Synonyms: acknowledgment, citation, credit, mention, quotation, reference |
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| cobaltite | (noun) a rare silvery-white mineral; important ore of cobalt | - |
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| coenobite | (noun) a member of a religious order living in common | Synonyms: cenobite |
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| columbite | (noun) a black mineral that is an ore of niobium and tantalum | Synonyms: niobite |
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| composite | (noun) a conceptual whole made up of complicated and related parts | Synonyms: complex |
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| (noun) considered the most highly evolved dicotyledonous plants, characterized by florets arranged in dense heads that resemble single flowers | Synonyms: composite plant |
| compositeness | (noun) the property of being a composite number | - |
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| conceitedness | (noun) the trait of being unduly vain and conceited; false pride | Synonyms: conceit, vanity |
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| contriteness | (noun) sorrow for sin arising from fear of damnation | Synonyms: attrition, contrition |
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| copalite | (noun) partly mineralized copal dug from the ground | Synonyms: copaline, fossil copal |
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| coprolite | (noun) fossil excrement; petrified dung | - |
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| copywriter | (noun) a person employed to write advertising or publicity copy | - |
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| cordierite | (noun) a blue mineral of magnesium and iron and aluminum and silicon and oxygen; often used as a gemstone | - |
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| cordite | (noun) explosive powder (nitroglycerin and guncotton and petrolatum) dissolved in acetone and dried and extruded in brown cords | - |
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| cosmopolite | (noun) a sophisticated person who has travelled in many countries | Synonyms: cosmopolitan |
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| counterfeiter | (noun) someone who makes copies illegally | Synonyms: forger |
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