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trifid

[trahy-fid]
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adjective
  1. cleft into three parts or lobes.
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Origin of trifid

First recorded in 1745–55, trifid is from the Latin word trifidus split in three. See tri-, -fid
Related formssub·tri·fid, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for trifid

trifid

adjective
  1. divided or split into three parts or lobes
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Word Origin

C18: from Latin trifidus from tri- + findere to split
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

Word Origin and History for trifid

adj.

"divided into three lobes," 1620s, from Latin trifidus "cleft in three," from tri- "three" (see tri-) + -fid. This adjective probably inspired triffid, the name of the three-legged walking poisonous plants in John Wyndham's novel "The Day of the Triffids" (1951).

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Online Etymology Dictionary, © 2010 Douglas Harper

trifid in Medicine

trifid

(trīfĭd′)
adj.
  1. Divided into three narrow parts or lobes.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.