(1) (from a combination of MOdulate and DEModulate) electronic equipment consisting of a device used to connect computers by a telephone line
WiktionaryText
Etymology
From Englishmodem, abbreviation for modulator demodulator.
Noun
Modem , also: (plural:Modems)
modem; a device that encodes digital computer signals into analog telephone signals and vice-versa. It allows computers to communicate over a phone line.
