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sign-on

[sahyn-on, -awn] /ˈsaɪnˌɒn, -ˌɔn/
noun
1.
Radio and Television. the opening salutation, station identification, etc., at the beginning of the broadcast day.
2.
an act or instance of signing on.
Origin of sign-on
1880-1885
First recorded in 1880-85; noun use of verb phrase sign on
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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