[ sahyn-on, -awn ]

  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

First recorded in 1880–85; noun use of verb phrase sign on

Words Nearby sign-on Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use sign-on in a sentence

British Dictionary definitions for sign on

sign on

  1. (tr) to hire or employ

  2. (intr) to commit oneself to a job, activity, etc

  1. (intr) British to register as unemployed with the Department of Social Security

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Idioms and Phrases with sign-on


Enlist oneself as an employee, as in Arthur decided to sign on with the new software company. [Late 1800s]

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.