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capsid1

[kap-sid]
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noun Microbiology.
  1. the coiled or polyhedral structure, composed of proteins, that encloses the nucleic acid of a virus.
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Origin of capsid1

1960–65; < French capside, equivalent to Latin caps(a) case2 + -ide -id1
Also called protein coat.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for protein-coat

capsid1

noun
  1. any heteropterous bug of the family Miridae (formerly Capsidae), most of which feed on plant tissues, causing damage to crops
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Word Origin

C19: from New Latin Capsus (genus)

capsid2

noun
  1. the outer protein coat of a mature virus
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Word Origin

C20: from French capside, from Latin capsa box
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 protein-coat

capsid

adj.

1889 in biology, "pertaining to capsidae," a type of insect, from Latin capsa "box" (see case (n.2)).

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Online Etymology Dictionary, © 2010 Douglas Harper

protein-coat in Medicine

capsid

(kăpsĭd)
n.
  1. The protein shell that surrounds a virus particle.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

protein-coat in Science

capsid

[kăpsĭd]
  1. The protein shell that surrounds a virus particle (known as a virion). See more at virus.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.