How to say "interface" in Japanese
Choosing the right word
- nounThe loanword, and the word to use for the general senses: the point where a person interacts with a machine, or where two devices, systems, or programs connect and exchange data.
- 界面かいめんno-adjectiveThe scientific term for an interface as a physical boundary: the surface where two substances or phases meet, discussed in physics and chemistry. It is not used for user interfaces or connections between machines.
- 引用仕様いんようしようnounA marginal match: the compound literally reads 'citation specification', and it is seldom the word you want for 'interface' — take インタフェース instead.
Use the loanword 「インタフェース」 for the general senses—a person interacting with a machine, or systems and devices connecting—and 界面 for the scientific boundary between substances; 引用仕様 is a marginal match best avoided.
Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only
Japanese equivalents
