MONORCHID Meaning of MONORCHID in English ■ adjective having only one testicle. ■ noun a ~ person or animal.Derivatives~ism noun OriginC19: from mod. L. monorchis , ~- , from Gk monos 'single' + orkhis 'testicle'. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004