RETRORSE Meaning of RETRORSE in English [ rɪ'trɔ:s ]■ adjective Biology turned or pointing backwards.OriginC19: from L. retrorsus , contr. of retroversus , from retro 'backwards' + vers- , vertere 'turn'. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004