EXAMPLES | WORD ORIGIN noun a small or fine fiber or filament. . Botany any of the delicate hairs on the young roots of some plants. . Cell Biology any threadlike structure or filament. Origin of fibril 1655–65; < New Latin fibrilla, equivalent to Latin fibr(a) fiber + -illa diminutive suffix Related forms fi·bril·lar, adjective fi·bril·lose, adjective
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for fibrillar Historical Examples of fibrillar British Dictionary definitions for fibrillar fibril fibrilla ( faɪˈbrɪlə, fɪ-) noun plural -brils or -brillae ( -ˈbrɪliː) a small fibre or part of a fibre biology a threadlike structure, such as a root hair or a thread of muscle tissue Derived Forms fibrilar, fibrillar or fibrillose, adjective fibrilliform, adjective Word Origin for fibril
C17: from New Latin
fibrilla a little fibre
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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Word Origin and History for fibrillar n.
1680s, back-formation from Modern Latin
fibrilla, diminutive of Latin fibra (see fiber).
Online Etymology Dictionary, © 2010 Douglas Harper
fibrillar [fī ′brə-lər, fĭb ′rə-] adj. Relating to a fibril. Relating to the fine rapid contractions or twitchings of fibers or of small groups of fibers in skeletal or cardiac muscle.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Any of various threadlike fibers or filaments that are constituent parts of a cell or larger structure. Cellulose fibrils are the main component of cell walls in plants. Fibrils make up the contractile part of striated muscle fiber in the body.
The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.