|1.||of or relating to the thyroid gland|
|2.||of or relating to the largest cartilage of the larynx|
|3.||See thyroid gland|
|4.||Also: thyroid extract the powdered preparation made from the thyroid gland of certain animals, used to treat hypothyroidism|
|[C18: from New Latin thyroidēs, from Greek thureoeidēs, from thureos oblong (literally: door-shaped) shield, from thura door]|
thyroid thy·roid (thī'roid')
The thyroid gland.
The thyroid cartilage.
A powdered preparation of the thyroid gland of certain domestic animals, used in the treatment of cretinism and myxedema, in certain cases of obesity, and in skin disorders.