"interface" in the noun sense
1. interface
chemistry) a surface forming a common boundary between two things (two objects or liquids or chemical phases)
2. interface, user interface
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
3. interface
the overlap where two theories or phenomena affect each other or have links with each other
"the interface between chemistry and biology"
4. interface, port
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)
Source: WordNet® (An amazing lexical database of English)
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