noun
appropriateness for a purpose; fitness for a purpose
General noun meaning suitability or aptness for a given purpose. Used in everyday contexts as well as technical discussions.
この道具の合目的性は疑いようがない。
The fitness of this tool for its purpose is beyond doubt.
noun
Philosophical term, especially in Kantian or teleological contexts, referring to the property of being directed toward an end or purpose.
カントの美学では、合目的性は重要な概念である。
In Kant's aesthetics, finality is an important concept.