| adesite | (noun) dark greyish extrusive rock | - |
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| andesite | (noun) a dark grey volcanic rock | - |
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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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| 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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| cerussite | (noun) a mineral consisting of lead carbonate that is an important source of lead | Synonyms: white lead ore |
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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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| chamosite | (noun) a greenish grey or black silicate of iron and aluminum | - |
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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 |
| dumpsite | (noun) a piece of land where waste materials are dumped | Synonyms: dump, garbage dump, rubbish dump, trash dump, waste-yard, wasteyard |
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| ectoparasite | (noun) any external parasitic organism (as fleas) | Synonyms: ectozoan, ectozoon, epizoan, epizoon |
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| endoparasite | (noun) any of various parasites that live in the internal organs of animals (especially intestinal worms) | Synonyms: endozoan, entoparasite, entozoan, entozoon |
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| entoparasite | (noun) any of various parasites that live in the internal organs of animals (especially intestinal worms) | Synonyms: endoparasite, endozoan, entozoan, entozoon |
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| gibbsite | (noun) white crystalline mineral consisting of aluminum hydroxide; a constituent of bauxite and a source of alumina | - |
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| hemiparasite | (noun) a parasitic plant that contains some chlorophyll and therefore is capable of photosynthesis | Synonyms: semiparasite |
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| magnesite | (noun) a white mineral consisting of magnesium carbonate; a source of magnesium | - |
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| martensite | (noun) a solid solution of carbon in alpha-iron that is formed when steel is cooled so rapidly that the change from austenite to pearlite is suppressed; responsible for the hardness of quenched steel | - |
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| opposite | (noun) a word that expresses a meaning opposed to the meaning of another word, in which case the two words are antonyms of each other | Synonyms: antonym, opposite word |
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| (noun) a contestant that you are matched against | Synonyms: opponent, opposition |
| (noun) a relation of direct opposition | Synonyms: contrary, reverse |
| (noun) something inverted in sequence or character or effect | Synonyms: inverse |
| pallasite | (noun) a meteorite composed principally of olivine and metallic iron | - |
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| parasite | (noun) an animal or plant that lives in or on a host (another animal or plant); it obtains nourishment from the host without benefiting or killing the host | - |
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| (noun) a follower who hangs around a host (without benefit to the host) in hope of gain or advantage | Synonyms: leech, sponge, sponger |
| perquisite | (noun) a right reserved exclusively by a particular person or group (especially a hereditary or official right) | Synonyms: exclusive right, prerogative, privilege |
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| (noun) an incidental benefit awarded for certain types of employment (especially if it is regarded as a right) | Synonyms: fringe benefit, perk |
| phillipsite | (noun) a group of white or reddish crystalline minerals of the zeolite family consisting of a hydrous silicate of calcium and potassium and aluminum | - |
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| prerequisite | (noun) something that is required in advance | Synonyms: requirement |
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| pyrolusite | (noun) a mineral consisting of manganese dioxide; an important source of manganese | - |
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| requisite | (noun) anything indispensable | Synonyms: essential, necessary, necessity, requirement |
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| rhodochrosite | (noun) a mineral consisting of manganese carbonate; a source of manganese | - |
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| semiparasite | (noun) a parasitic plant that contains some chlorophyll and therefore is capable of photosynthesis | Synonyms: hemiparasite |
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| site | (noun) a computer connected to the internet that maintains a series of web pages on the World Wide Web; a computer connected to the internet that maintains a series of web pages on the World Wide Web | Synonyms: internet site, web site, website |
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| (noun) the piece of land on which something is located (or is to be located) | Synonyms: land site |
| (noun) physical position in relation to the surroundings | Synonyms: situation |
| website | (noun) a computer connected to the internet that maintains a series of web pages on the World Wide Web; a computer connected to the internet that maintains a series of web pages on the World Wide Web | Synonyms: internet site, site, web site |
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