CLADOGENESIS Meaning of CLADOGENESIS in English [ ˌkleɪdə(ʊ)'dʒɛnɪsɪs , 'kladə(ʊ)- ]■ noun Biology the formation of a new species by evolutionary divergence from an ancestral form.Derivativescladogenetic adjective Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004