How to say "interdisciplinary" in Japanese

• 学際がくさいCommon
  no-adjectiveA noun for interdisciplinarity itself: study or a field that crosses the boundaries between academic disciplines. The more common of the two, it names the concept or field rather than describing something as interdisciplinary.
• 学際的がくさいてき
  na-adjectiveThe adjective: describes research, methods, or fields as interdisciplinary, spanning several academic disciplines. Less common than 学際, but the word to reach for when an English sentence needs an adjective rather than a noun.
  学際がくさい的てき研究けんきゅうを促進そくしんするのにカリキュラム改革かいかくが不可欠ふかけつであることは明あきらかである。↗

  It should be clear that the curriculum reform is mandatory in order to enhance interdisciplinary research.

Both words cover the same idea of crossing boundaries between academic disciplines: use the noun 学際 for interdisciplinarity or such a field, and the adjective 学際的 to describe research or approaches as interdisciplinary; 学際 is the more common.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• 学際がくさいinterdisciplinary
• 学際的がくさいてきinterdisciplinary