MONOCYCLIC Meaning of MONOCYCLIC in English [ ˌmɒnə(ʊ)'sʌɪklɪk , -'sɪk- ]■ adjective1》 Chemistry having one ring of atoms in its molecule. 2》 relating to a single cycle of activity. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004