スペシエーションMeanings1nounspeciationBiological term for the evolutionary process by which new species arise. The native Japanese equivalent is 種分化 (しゅぶんか).See also: 種分化スペシエーションは進しん化か生せい物ぶつ学がくの重じゅう要ような概がい念ねんだ。Speciation is an important concept in evolutionary biology.