互ご恵けい的てき利り他た主しゅ義ぎ

noun

reciprocal altruism

A technical term in evolutionary biology and behavioral ecology, referring to altruistic behavior that is reciprocated over time.

• 互ご恵けい的てき利り他た主しゅ義ぎは、生せい物ぶつの協きょう力りょく行こう動どうを説せつ明めいする理り論ろんの一ひとつだ。

  Reciprocal altruism is one of the theories that explain cooperative behavior in organisms.