plural telecoms
Definition of telecom
2
: the telecommunications industry
A lot of smart and experienced people lost money investing in telecom … — The Wall Street Journal
—often used before another noun telecom companies/servicesthe telecom industryBut questions remain about how the telecom giant will shift its strategy and whether it will be able to do it fast enough to catch up with tech giants …— Melissa Repko
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Merriam-Webster unabridged
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Time Traveler for telecom
The first known use of telecom was in 1953
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