ACOTYLEDON Meaning of ACOTYLEDON in English [ əˌkɒtɪ'li:d(ə)n ]■ noun a plant that has no distinct seed leaves.Derivatives~ous adjective OriginC18: from mod. L. plural ~es (see a- 1 , cotyledon ). Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004