Medical Dictionary


noun athy·re·o·sis \ˌā-ˌthī-rē-ˈō-səs\
plural athy·re·o·ses \-ˌsēz\

Medical Definition of ATHYREOSIS

:  an abnormal condition caused by absence or functional deficiency of the thyroid gland
athy·re·ot·ic \-ˈät-ik\ adjective


How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears