Dictionary
mi•cro•tu•bule
Pronunciation: (mī"krō-tOO'byOOl, -tyOO'-), [key]—
n. Cell Biol.
a hollow cylindrical structure in the cytoplasm of most cells, involved in intracellular shape and transport. See diag. under
cell. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.