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hydrosome

[hahy-druh-sohm]
noun Zoology.
  1. the entire body of a compound hydrozoan.
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Origin of hydrosome

1860–65; hydro- (combining form representing hydra) + -some3
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for hydrosome

hydrosome

hydrosoma (ˌhaɪdrəˈsəʊmə)

noun
  1. zoology the body of a colonial hydrozoan
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Word Origin

C19: from hydro-, from hydra + -some ³
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