| 单词 | thyroid |
| 释义 | thyroid n. & adj. --n (in full thyroid gland) 1. a large ductless gland in the neck of vertebrates secreting a hormone which regulates growth and development through the rate of metabolism. 2. an extract prepared from the thyroid gland of animals and used in treating goitre and cretinism etc. --adj Anat. & Zool. 1. connected with the thyroid cartilage (thyroid artery). 2. shield-shaped. Phrases and idioms thyroid cartilage a large cartilage of the larynx, the projection of which in man forms the Adam's apple. Etymology: obs.F thyroide or mod.L thyroides, irreg. f. Gk thureoeides f. thureos oblong shield |
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