sign-in

[ sahyn-in ]
/ ˈsaɪnˌɪn /

noun

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

Origin of sign-in

First recorded in 1945–50; noun use of verb phrase sign in

Definition for sign in (2 of 2)

Origin of sign

1175–1225; (noun) Middle English signe < Old French < Latin signum mark, sign, ensign, signal, image; (v.) Middle English signen to mark with a sign, especially the sign of the cross < Old French signer < Latin signāre to mark with a sign, inscribe, affix a seal to, derivative of signum

SYNONYMS FOR sign

1, 4 signal.
10 indication, hint, augury. Sign, omen, portent name that which gives evidence of a future event. Sign is a general word for whatever gives evidence of an event—past, present, or future: Dark clouds are a sign of rain or snow. An omen is an augury or warning of things to come; it is used only of the future, in general, as good or bad: birds of evil omen. Portent, limited, like omen, to prophecy of the future, may be used of a specific event, usually a misfortune: portents of war.

OTHER WORDS FROM sign

sign·less, adjective sign·like, adjective post·sign, verb (used with object) un·signed, adjective

WORDS THAT MAY BE CONFUSED WITH sign

sign sing (see synonym study at the current entry)

British Dictionary definitions for sign in (1 of 2)

sign in

verb (adverb)

to sign or cause to sign a register, as at a hotel, club, etc
to make or become a member, as of a club

British Dictionary definitions for sign in (2 of 2)

sign
/ (saɪn) /

noun

verb

Derived forms of sign

signable, adjective

Word Origin for sign

C13: from Old French signe, from Latin signum a sign

Medical definitions for sign in

sign
[ sīn ]

n.

An objective finding, usually detected on physical examination, from a laboratory test, or on an x-ray, that indicates the presence of abnormality or disease.

Scientific definitions for sign in

sign
[ sīn ]

A body manifestation, usually detected on physical examination or through laboratory tests or xrays, that indicates the presence of abnormality or disease. Compare symptom.
See symbol. See Table at symbol.

Idioms and Phrases with sign in (1 of 2)

sign in

Record one's arrival by signing a register, as in He signed in both himself and his wife. [c. 1930] For the antonym, see sign out.

Idioms and Phrases with sign in (2 of 2)

sign