| AMYOTROPHIC | • amyotrophic adj. (Medicine) Characterized by amyotrophy (atrophy of the muscles). • AMYOTROPHIC adj. relating to amyotrophy, atrophy of the muscles.
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| ARACHNOLOGY | • arachnology n. The study of the Arachnida. • ARACHNOLOGY n. the study of spiders.
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| ARCHAEOLOGY | • archaeology n. The study of the past by excavation and analysis of its material remains… • archæology n. Archaic spelling of archaeology.
 • ARCHAEOLOGY n. the study of ancient human artefacts, also ARCHEOLOGY.
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| ARTHROSCOPY | • arthroscopy n. The examination of the interior of a joint (such as the knee) using an arthroscope. • ARTHROSCOPY n. the examination of joints with an arthroscope.
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| BRACHYODONT | • brachyodont adj. Having unusually short teeth. • BRACHYODONT adj. of mammals, such as humans, having teeth with short crowns.
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| CHOROGRAPHY | • chorography n. The study of provinces, regions, cities, etc., as opposed to larger-scale geography. • CHOROGRAPHY n. the art of describing or mapping a region or district.
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| CHRYSOCOLLA | • chrysocolla n. (Mineralogy) A vitreous silicate mineral that is a minor ore of copper, with the chemical formula (Cu… • CHRYSOCOLLA n. a hydrated silicate of copper usually occurring as green opaline crusts and masses.
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| COSMOGRAPHY | • cosmography n. The creation of maps of the universe. • cosmography n. The study of the size and geometry of the universe and changes in those with cosmic time.
 • COSMOGRAPHY n. a general description of the world or of the universe.
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| HYDROCARBON | • hydrocarbon n. (Organic chemistry) A compound consisting only of carbon and hydrogen atoms. • HYDROCARBON n. a compound of hydrogen and carbon with nothing else, occurring notably in oil, natural gas and coal.
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| HYDROCORALS | • hydrocorals n. Plural of hydrocoral. • HYDROCORAL n. any hydrozoan coelenterate of an order which includes the millepores.
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| HYPOCORISMA | • HYPOCORISMA n. the use of a pet name or nickname, also HYPOCORISM. | 
| ICONOGRAPHY | • iconography n. A set of specified or traditional symbolic forms associated with the subject or theme of a stylized genre of art. • iconography n. The art of representation by pictures or images; the description or study of portraiture or representation…
 • iconography n. The study of representative art in general.
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| PTOCHOCRACY | • ptochocracy n. A society or a system ruled and dominated by the poor. • PTOCHOCRACY n. government by the poor.
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| SCHOOLYARDS | • schoolyards n. Plural of schoolyard. • SCHOOLYARD n. the grounds of a school, especially as a place for children to play.
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| THORACOTOMY | • thoracotomy n. (Surgery) The surgical procedure of making an incision into the chest, normally as a first step to gain… • THORACOTOMY n. surgical incision of the chest wall.
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| TRACHEOTOMY | • tracheotomy n. (Surgery) A surgical procedure in which an incision is made into the trachea, through the neck, and… • TRACHEOTOMY n. a surgical incision into the windpipe, to relieve choking, also TRACHEOSTOMY.
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