Main Entry:

¹thy·roid

Pronunciation:

\ˈthī-ˌrȯid\

Variant(s):

also thy·roi·dal \thī-ˈrȯi-d^əl\

Function:

adjective

Etymology:

New Latin thyroides, from Greek thyreoeidēs shield-shaped, thyroid, from thyreos shield shaped like a door, from thyra door — more at door

Date:

circa 1741

1 a: of, relating to, or being the thyroid gland b: suggestive of a disordered thyroid <a thyroid personality>2: of, relating to, or being the chief cartilage of the larynx