Try Our Apps


Avoid these words. Seriously.


[mahy-kroh-too-byool, -tyoo-] /ˌmaɪ kroʊˈtu byul, -ˈtyu-/
noun, Cell Biology.
a hollow cylindrical structure in the cytoplasm of most cells, involved in intracellular shape and transport.
Origin of microtubule
First recorded in 1960-65; micro- + tubule Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
Cite This Source
British Dictionary definitions for microtubule


(biology) a tubular aggregate of protein subunits that forms structures, such as the mitotic spindle or the cilia of animal cells or of protozoans, in which the protein interacts with other proteins to generate various cellular movements
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
Cite This Source
microtubule in Medicine

microtubule mi·cro·tu·bule (mī'krō-tōō'byōōl, -tyōō-)
Any of the proteinaceous cylindrical hollow structures that are distributed throughout the cytoplasm of eukaryotic cells, providing structural support and assisting in cellular locomotion and transport.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
microtubule in Science
Any of the tube-shaped protein structures that help eukaryotic cells maintain their shape and assist in forming the cell spindle during cell division. Microtubules and actin filaments are the main components of the cell's supporting matrix or cytoskeleton.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source

Word of the Day

Nearby words for microtubule

Word Value for microtubule

Scrabble Words With Friends