Definition of "sign on" in English

Verb

1. To join something, after signing.

2. To commit oneself, as to a project, a goal, an organization, a cause.

   • I never signed on for this.

3. To begin broadcasting a radio or television signal, usually at the beginning of a broadcasting day and after being off the air for several hours.

   • Years ago, the TV station would sign on at 5 a.m., but now it broadcasts 24 hours a day.

4. To log on; to start using a computer, radio, or other multicast device; to start talking.

5. To apply to receive unemployment benefits.

Noun

1. Nonstandard spelling of sign-on.