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[plahy-kuh] /ˈplaɪ kə/
noun, plural plicae
[plahy-see, -kee] /ˈplaɪ si, -ki/ (Show IPA)
Zoology, Anatomy. a fold or folding.
Also called plica polonica
[puh-lon-i-kuh] /pəˈlɒn ɪ kə/ (Show IPA)
. Pathology. a matted, filthy condition of the hair, caused by disease, vermin, etc.
(in medieval music) a vertical mark attached to a neume, standing for an interpolated melodic ornament.
Origin of plica
1675-85; < Medieval Latin: a fold, back formation from Latin plicāre to fold, ply2
Related forms
plical, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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British Dictionary definitions for plicae


noun (pl) plicae (ˈplaɪsiː)
(anatomy) Also called fold. a folding over of parts, such as a fold of skin, muscle, peritoneum, etc
(pathol) a condition of the hair characterized by matting, filth, and the presence of parasites
Derived Forms
plical, adjective
Word Origin
C17: from Medieval Latin: a fold, from Latin plicāre to fold; see ply²
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
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plicae in Medicine

plica pli·ca (plī'kə)
n. pl. pli·cae (-kē)

  1. A fold or ridge, as of skin or membrane.

  2. See false membrane.

pli'cal adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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