Main Entry: ¹in·ter·face

Pronunciation: \ˈin-tər-ˌfās\

Function: noun

Date: 1882

1 : a surface forming a common boundary of two bodies, spaces, or phases <an oil-water interface>
2 a : the place at which independent and often unrelated systems meet and act on or communicate with each other <the man-machine interface> b : the means by which interaction or communication is achieved at an interface

— in·ter·fa·cial \ˌin-tər-ˈfā-shəl\ adjective