「species」が名詞として使われる場合、生物学における分類階級の一つで、似た特徴を持つ個体群を指す。また、広義には種類や類を表すのにも用いられる。具体的な例を以下に示す。
・例文出典:Wikipedia
出典:『Wikipedia』 (2011/07/03 03:50 UTC 版)
In biology, a species is one of the basic units of biological classification and a taxonomic rank. A species is often defined as a group of organisms capable of interbreeding and producing fertile offspring. While in many cases this definition is adequate, more precise or differing measures are often used, such as similarity of DNA, morphology or ecological niche. Presence of specific locally adapted traits may further subdivide species into subspecies.