- Radio and Television. the opening salutation, station identification, etc., at the beginning of the broadcast day.
- an act or instance of signing on.
Origin of sign-on
First recorded in 1880–85; noun use of verb phrase sign on
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for sign-on
The small number can be attributed to the fact that the men, like the assembly, had to sign-on without knowing their destiny.The Road to Independence: Virginia 1763-1783
Virginia State Dept. of Education