athyroidism

[ā-thī′roi-dĭz′əm, ə-thī′-]

n.

The absence of the thyroid gland or the suppression of its secretion.

Related formsa′thy•rot′ic (ā′thī-rŏt′ĭk, ăth′ī-) adj.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.