micrometastasis

[mī′krō-mə-tăstə-sĭs]

n.

The spread of cancer cells from the primary site with the secondary tumors too small to be clinically detected.

Related formsmi′cro•met′a•static (-mĕt′ə-stătĭk) adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.