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tergum

[tur-guh m]
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noun, plural ter·ga [tur-guh] /ˈtɜr gə/. Zoology.
  1. the dorsal surface of a body segment of an arthropod.
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Origin of tergum

1820–30; < Latin: the back
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for tergum

tergum

noun plural -ga (-ɡə)
  1. a cuticular plate covering the dorsal surface of a body segment of an arthropodCompare sternum (def. 3)
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Derived Formstergal, adjective

Word Origin

C19: from Latin: the back
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012