Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun 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.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun small tubes made of protein and found in cells; part of the cytoskeleton.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun a microscopically small tubule

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