teleconference (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.

1550s, "act of consulting together," from French confrence (15c.), from Medieval Latin conferentia, from Latin conferens, present participle of conferre "to bring together; deliberate, talk over," literally "to bring together," from assimilated form of com "together" (see con-) + ferre "to bear, carry" (from PIE root *bher- (1) "to carry," also "to bear children"). Meaning "formal meeting for consultation, discussion, instruction, exchange of opinions, etc.," is from 1580s. As a verb from 1846 (implied in conferencing).

Proto-Indo-European root meaning "far" (in space or time). Some sources connect this root with *kwel- (1), forming words to do with turning, via the notion of "completion of a cycle."

It forms all or part of: paleo-; tele-; teleconference; telegony; telegraph; telegram; telekinesis; Telemachus; telemeter; telepathy; telephone; telescope; television.

It is the hypothetical source of/evidence for its existence is provided by: Sanskrit caramah "the last;" Greek tele "far off, afar, at or to a distance," palaios "old, ancient," palai "long ago, far back;" Breton pell "far off," Welsh pellaf "uttermost."