noun
natural classification
Technical term used in biology and taxonomy for classification systems based on evolutionary relationships rather than arbitrary criteria.
ダーウィンの進化論は自然分類の基礎となった。
Darwin's theory of evolution became the basis of natural classification.
人為分類 is artificial classification based on arbitrary or convenient criteria, contrasting with 自然分類 which reflects natural relationships.
Compound of 自然 (natural) and 分類 (classification). A straightforward technical term with no obscure historical derivation.