also  thy*roi*dal  adj 1 a  :  of, relating to, or being the thyroid gland < cancer>   b  :  suggestive of a disordered thyroid <a personality>   2  :  of, relating to, or being the thyroid cartilage
n 1  :  a large bilobed endocrine gland of craniate vertebrates that arises as a median ventral outgrowth of the pharynx, lies in the anterior base of the neck or anterior ventral part of the thorax, is often accompanied by lateral accessory glands sometimes more or less fused with the main mass, and produces esp. the hormones thyroxine and triiodothyronine - called also thyroid gland   2  :  a preparation of the thyroid gland of various domesticated food animals (as pigs) containing approximately ¹/₁₀ percent of iodine combined in thyroxine and used in treating thyroid disorders - called also thyroid extract  .
 
 
 
Similar sounding terms:  thready  throat 
 
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