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definitions

sign-in

[sahyn-in]
|

noun

an act, an instance, or a time of signing in.

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Nearby words

  1. sign one's own death warrant,
  2. sign out,
  3. sign over,
  4. sign test,
  5. sign up,
  6. sign-off,
  7. sign-on,
  8. sign-out,
  9. sign-up,
  10. signa

Origin of sign-in

First recorded in 1945–50; noun use of verb phrase sign in
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for sign-in

Word Origin and History for sign-in

sign-in

n.

1968, from the verbal phrase; see sign (v.) + in (adv.).

Online Etymology Dictionary, © 2010 Douglas Harper