[ too-byuh-lin, tyoo- ]
/ ˈtu byə lɪn, ˈtyu- /

noun Biochemistry.

either of two globular proteins that form the structural subunits of microtubules.

Origin of tubulin

First recorded in 1965–70; tubule + -in2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Medicine definitions for tubulin


[ tōōbyə-lĭn ]


A globular protein that is the structural constituent of microtubules.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.