— hypothyroid , adj.
/huy'peuh thuy"roy diz'euhm/ , n. Pathol.
1. deficient activity of the thyroid gland.
2. the condition produced by a deficiency of thyroid secretion, resulting in goiter, myxedema, and, in children, cretinism.
[ 1900-05; HYPO- + THYROID + -ISM ]