Origin: Greek prefix tele-
Telemarketing has 2 different meanings across 1 category:
the use of the telephone as an interactive medium for promotion and sales
"The company spent its entire budget on telemarketing instead of running traditional print ads to boost sales directly."
The business of selling products or services by making unsolicited telephone calls to potential customers.
"I tried to block every number on my phone because I hate being bombarded by telemarketing calls during dinner."