Interface - Definition

n 1: (chemistry) a surface forming a common boundary between two
things (two objects or liquids or chemical phases)
2: (computer science) a program that controls a display for the
user (usually on a computer monitor) and that allows the user
to interact with the system [syn: interface, user
interface]
3: the overlap where two theories or phenomena affect each other
or have links with each other; "the interface between
chemistry and biology"
4: (computer science) computer circuit consisting of the
hardware and associated circuitry that links one device with
another (especially a computer and a hard disk drive or other
peripherals) [syn: interface, port]