Thy"roid (?), a. [Gr.
&?; shield-shaped; &?; a large, oblong shield (from &?; a door) + &?; form: cf. F. thyroïde,
thyréoïde.]
1. Shaped like an oblong shield; shield-shaped; as, the thyroid cartilage.
2.
(Anat.) Of or
pertaining to the thyroid body, thyroid cartilage, or thyroid artery; thyroideal.
Thyroid cartilage.
See under Larynx. - - Thyroid body, or Thyroid gland (Anat.), a
glandlike but ductless body, or pair
of bodies, of unknown function, in the floor
of the mouth or the
region of the larynx. In man and most mammals it is a highly vascular organ, partly surrounding the base of the larynx and the upper
part of the
trachea. -- Thyroid dislocation
(Surg.), dislocation of the thigh
bone into the thyroid foramen. -- Thyroid
foramen, the obturator foramen.
Hear it pronounced