thy·roid /ˈθaɪˌrɔɪd/
 (a.)甲狀腺的,盾狀的,甲狀軟骨的甲狀腺,甲狀軟骨,甲狀腺劑
 thy·roid /θaɪˈrɔɪdḷ/ 形容詞
 Thy·roid a.
 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., an endocrine gland having two lobes, located in the floor of the mouth or the region of the larynx, which secretes two hormones (thyroxine and triiodothyronine) that regulate the rates of growth and metabloism.  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.  Cases of hypothyroidism, where the gland is insufficiently active, can be treated by administration of thyroxine or a combination of thyroxine and triiodothyronine.
 Thyroid dislocation Surg., dislocation of the thigh bone into the thyroid foramen.
 Thyroid foramen, the obturator foramen.
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 thyroid
      adj 1: of or relating to the thyroid gland; "thyroid deficiency";
             "thyroidal uptake" [syn: thyroidal]
      2: suggestive of a thyroid disorder; "thyroid personality"
      n : located near the base of the neck [syn: thyroid gland]