[fahy-bruh l, fib-ruh l]
- 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
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for fibril
Fī′bril, a small fibre; one of the extremely minute threads composing an animal fibre; Fibril′la, a fibril, filament.
fibrilla (faɪˈbrɪlə, fɪ-)
- a small fibre or part of a fibre
- biology a threadlike structure, such as a root hair or a thread of muscle tissue
C17: from New Latin fibrilla a little fibre
Word Origin and History for fibril
1680s, back-formation from Modern Latin fibrilla, diminutive of Latin fibra (see fiber).
Online Etymology Dictionary, © 2010 Douglas Harper
- A minute fiber.
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.