BOTRYOIDAL Meaning of BOTRYOIDAL in English [ ˌbɒtrɪ'ɔɪd(ə)l ]■ adjective (chiefly of minerals) shaped like a cluster of grapes.OriginC18: from Gk botruoeidēs (from botrus 'bunch of grapes') + -al . Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004