We found 11 dictionaries that define the word sign-off:

General (7 matching dictionaries)

1. sign-off: Merriam-Webster
2. sign-off: Oxford Learner's Dictionaries
3. sign-off: Wordnik
4. sign-off: Wiktionary
5. sign-off: Infoplease Dictionary
6. sign-off: Dictionary.com
7. Sign-off: Wikipedia, the Free Encyclopedia

Business (2 matching dictionaries)

8. SIGN-OFF: Accounting Glossary
9. Sign-off: Legal dictionary

Computing (1 matching dictionary)

10. Sign-off: Encyclopedia

Medicine (1 matching dictionary)

11. sign-off: Medical dictionary

(Note: See sign_off as well.)

Definitions from Wiktionary (Sign-off) ▸ noun:  Alternative spelling of signoff [The act or process of signing off (approving with a signature).] Similar: okay, at-sign, abbrev, trade mark, abbreviature, S.O.S., acknowledgement, Off., appt., fullstop, more... Opposite: sign-on, log-in, start-up Types: best, regards, sincerely, thank you, talk to you soon, take care, more... Phrases: Sign-on and sign-off, Television sign-off routines in the United Kingdom, more... Colors:     red,     black,     white,     gray,     blue, more... ▸ Words similar to sign-off ▸ Usage examples for sign-off ▸ Idioms related to sign-off ▸ Wikipedia articles (New!) ▸ Popular adjectives describing sign-off ▸ Words that often appear near sign-off ▸ Rhymes of sign-off ▸ Invented words related to sign-off