Longman Dictionary of Contemporary English homepage

Date: 1700-1800
Language: Modern Latin
Origin: thyroides, from Greek thyreoeides 'shield-shaped', from thyreos 'shield shaped like a door', from thyra 'door'; from the shape of the cartilage at the front of the throat

thyroid

 noun
     
Related topics: Human
thy‧roid also thyroid gland [countable]
HBH an organ in your neck that produces substances that affect the way your body grows and the way you behave
Definition from the Longman Dictionary of Contemporary English
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