sign-on noun 6sign on verb 5forms 5 noun6 •An instance of signing on to something.Some legislative aides in Washington suggest that church lobbyists do need to be discriminating in their sign-ons. — 1996 •An attempt to log in.If the number of attempted sign-ons reaches the threshold value in the security software, the system will respond. — 1998 •The username and password for logging in to a computer account.No one likes to continually update and remember multiple passwords and sign-ons, so if it's affordable, try to keep the security as simple as possible. — 2014 •A signing bonus.At Ryder, Habib used sign-ons as a way to attract key talent to the transportation company. — 1997 •A person who signs on to something.The early sign-ons were already picking their way through the buffet, but the majority of the 3,500 guests had yet to arrive. — 2009 •A verbal script that is repeated at the start of every instance of something, as a form of greeting and identification.These sign-ons and sign-offs have evolved through the years and have become “MFM” and “YFM.” This way, my entire family is included in the hellos and good-byes. — 2005 sign on verb5 •To join something, after signing. •To commit oneself, as to a project, a goal, an organization, a cause.I never signed on for this. •(UK) To apply to receive unemployment benefits.Oh, one thing led to another; you know. I just sort of faffed around — I just did odd jobs; and sometimes in between I signed on. — 1999 •To log on; to start using a computer, radio, or other multicast device; to start talking.Edward ran a pale hand through his perfect golden-bronze hair, then signed on to 4chan.org, the darkest place on the Internet, where all his vampire compatriots spent their time. — 2009 •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. formssigned on · signing on · signs on · sign ons · sign-ons