GADOID Meaning of GADOID in English [ 'geɪdɔɪd , 'ga- ]■ noun Zoology a bony fish of an order (Gadiformes) that comprises cod, hake, and related fish.OriginC19: from mod. L. gadus (from Gk gados 'cod') + -oid . Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004