Look up sign in Wiktionary, the free dictionary.

A sign is an entity which indicates another entity.

Contents

• Communication
• Mathematics
• Organizations
• Music
• Surname
• Other uses
• See also

Sign may also refer to:

Communication

• Signage, the use of signs and visual graphics to convey information
• Signature, a handwritten depiction of someone's name or other mark used as a proof of identity and intent
• Sign (semiotics), anything that communicates a meaning
• Sign language, a languages that uses the visual-manual modality to convey meaning

Mathematics

• Sign (mathematics), an indication of negative and positive numbers
  • Sign function, also known as the signum function
  • Sign of a permutation of a finite set

Organizations

• Project Sign, a project by the U.S. Air Force to investigate unidentified flying objects (UFOs)
• Scottish Intercollegiate Guideline Network, a Scottish group that develops evidence-based medical guidelines

Music

• Segno ( ), a symbol used as a navigation marker in music; translated from the Italian word "sign"
• Sign (band), an Icelandic band
• Sign (Clock DVA album), 1993
• "Sign" (Mr. Children song), 2004
• "Sign" (Beni Arashiro song), 2010
• "Sign" (Flow song), 2010
• "Sign", a 2018 song by Exo from Don't Mess Up My Tempo
• "Sign", a 2015 song by Girls' Generation from Lion Heart
• "Sign", a 2001 song by Marcella Detroit from Dancing Madly Sideways
• "Sign", a song by Susumu Hirasawa
  • "Sign-2", a different version of "Sign" from Berserk: Millennium Falcon Hen Seima Senki no Shō
• Sign (Autechre album), 2020
• "The Sign" (song), a 1993 song by Ace of Base
• The Sign (Ace of Base album), a 1993 album by Ace of Base

Surname

• Christopher Sign (1976–2021), American journalist

Other uses

• Astrological sign, one of twelve sectors of the sky in astrology
• Medical sign, an indication of disease, injury, or abnormal physiological state
• Sign (TV series), a 2011 South Korean television series

See also

• Signs (disambiguation)
• Signing (disambiguation)
• Signify (disambiguation)
• The Sign (disambiguation)
• Sign-Trace
• Sine, a trigonometric function of an angle
• Sine (disambiguation)

This disambiguation page lists articles associated with the title Sign.
If an internal link led you here, you may wish to change the link to point directly to the intended article.