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New American Oxford Dictionary

speciation

spe ci a tion |ˌspēSHēˈāSHən, ˌspēsē -ˌspiʃiˈeɪʃən | noun Biology the formation of new and distinct species in the course of evolution. DERIVATIVES spe ci ate |ˈspēSHēˌāt, spēsē - |verb

 

Oxford Dictionary

speciation

speciation |ˌspiːʃɪˈeɪʃ (ə )n, ˌspiːs -| noun [ mass noun ] Biology the formation of new and distinct species in the course of evolution. DERIVATIVES speciate |ˈspiː - |verb