telecommunication (n.)

before vowels tel-, word-forming element meaning "far, far off, operating over distance" (also, since c. 1940, "television"), from Greek tele "far off, afar, at or to a distance," related to teleos (genitive telos) "end, goal, completion, result," from PIE root *kwel- (2) "far" in space or time.

early 15c., "act of communicating, act of imparting, discussing, debating, conferring," from Old French comunicacion (14c., Modern French communication) and directly from Latin communicationem (nominative communicatio) "a making common, imparting, communicating; a figure of speech," noun of action from past-participle stem of communicare "to share, divide out; communicate, impart, inform; join, unite, participate in," literally "to make common," related to communis "common, public, general" (see common (adj.)). Meaning "that which is communicated" is from late 15c.; meaning "means of communication" is from 1715. Related: Communications; communicational.

abbreviation of telecommunication, attested by 1963.