tonofibril

[ tŏn′ō-fībrəl, -fĭbrəl ]

n.

One of a system of fibers found in the cytoplasm of epithelial cells.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.