Also found in: Dictionary, Thesaurus, Acronyms, Encyclopedia.


(mu, the twelfth letter of the Greek alphabet) micro-; the heavy chain of IgM (see immunoglobulin).
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.


A unit of length equal to 10–6 m.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.