Definition of dial up or dial something up in English:

dial up (or dial something up)

Access a computer system or service remotely via a telephone line: dialling up each time we want to use the Internet will become a thing of the past people do not have to pay for phone line calls every time they dial up to the internet plans to enable customers to dial up videos from their living room
More example sentences
  • You will not be able to change your password unless you have dialed up to the network and are connected.
  • I never dial up to listen to my voice messages.
  • The company's traffic comes largely from its 22.2 million subs, who see the portal whenever they dial up.
See parent entry: dial

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(of a person or their actions) criminal; villainous