sign-on

[ sahyn-on, -awn ]
/ ˈsaɪnˌɒn, -ˌɔn /

noun

Radio and Television. the opening salutation, station identification, etc., at the beginning of the broadcast day.
an act or instance of signing on.

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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. 2020

Example sentences from the Web for sign-on