thyroid: Meaning and Definition of

thy•roid

1. of or pertaining to the thyroid gland.
2. of or pertaining to the largest cartilage of the larynx, forming the projection known in humans as the Adam's apple.

1. See
2. the thyroid cartilage. See diag. under
3. an artery, vein, etc., in the thyroid region.
4. a preparation made from the thyroid glands of certain animals, used in treating hypothyroid conditions.