Thy"roid (?), a. [Gr. shield-shaped; a large, oblong shield (from a door) + form: cf. F. thyroide, thyr'eoide.]
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, ∨ 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.<-- produces thyroxine. --> -- Thyroid dislocation Surg., dislocation of the thigh bone into the thyroid foramen. -- Thyroid foramen, the obturator foramen.
© Webster 1913.