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microtubule

[mahy-kroh-too-byool, -tyoo-] /ˌmaɪ kroʊˈtu byul, -ˈtyu-/
noun, Cell Biology
1.
a hollow cylindrical structure in the cytoplasm of most cells, involved in intracellular shape and transport.
Origin
1960-1965
1960-65; micro- + tubule
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for microtubule

microtubule

/ˌmaɪkrəʊˈtjuːbjuːl/
noun
1.
(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
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microtubule in Medicine

microtubule mi·cro·tu·bule (mī'krō-tōō'byōōl, -tyōō-)
n.
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.
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microtubule in Science
microtubule
  (mī'krō-t'byl)   
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.
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