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