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trochophore

[trok-uh-fawr, -fohr]
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noun Zoology.
  1. a ciliate, free-swimming larva common to several groups of invertebrates, as many mollusks and rotifers.
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Origin of trochophore

1890–95; < Greek trochó(s) wheel + -phore
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for trochophore

trochophore

trochosphere (ˈtrɒkəsˌfɪə)

noun
  1. the ciliated planktonic larva of many invertebrates, including polychaete worms, molluscs, and rotifers
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Word Origin

C19: from Greek trokhos wheel + -phore
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