[ dahy-uh l-uhp, dahyl- ]
/ ˈdaɪ əlˌʌp, ˈdaɪl- /
relating to or denoting a type of computer data transmission encoded in audio format and transmitted through a telephone call to an Internet service provider: A dial-up connection to the Internet is too slow to play most online video games.
Origin of dial-up
adj. use of verb phrase dial up
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019