to connect to a computer system using a telephone line Back then, you still had to dial up to the Internet at 5p a minute. I tried to dial up a connection. see also dial-up
- 1to order something by phone, to be delivered immediately If I'm too tired to cook, I just dial up a pizza.
- 2to increase the noise, heat, etc. produced by a piece of equipment by moving its controls synonym turn something up (1) Dial up the volume.
- 3(informal) to increase the amount, degree or power of a quality She gradually dialled up the pressure on the rest of the team.