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. mi'cro·tu'bu·lar adj.

Main Entry: mi·cro·tu·bule
Pronunciation: "mI-krO-'t(y)ü-(")byü(&)l
Function: noun
: any of the minute tubules ineukaryotic cytoplasm that are composed of the protein tubulin and form an important component of the cytoskeleton, mitotic spindle, cilia, and flagella —mi·cro·tu·bu·lar /-by&-l&r/ adjective

microtubule mi·cro·tu·bule (mī'krō-t&oomacr;'by&oomacr;l, -ty&oomacr;-)
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.