Editing Sign (section)

== Types ==
[[File:Zodiac German Woodcut.jpg|right|thumb|180px|The western zodiac signs]]
[[File:DurbanSign1989.jpg|right|thumb|150px|A [[signboard]] on a beach in [[Durban]] in [[apartheid]]-era [[South Africa]] indicates a [[racial segregation|racially segregated]] beach.]]
The word ''sign'' has a variety of meanings in English, including:
* [[Sun sign]]s in [[astrology]]
* Sign or signing, in communication: communicating via [[hand gesture]]s, such as in [[sign language]].
* [[Gang signal]]
* Sign, in [[Tracking (hunting)]]: also known as [[Spoor (animal)]]; trace evidence left on the ground after passage.
* A [[signboard]].
* A sign, in common use, is an [[wikt:indication|indication]] that a previously observed event is about to occur again
* Sign, in [[divination]] and religion: an [[omen]], an event or occurrence believed to foretell the future
* Sign, in [[ontology]] and [[spirituality]]: a [[coincidence]] or surprising event thought to reveal divine will; see [[synchronicity]]
* [[Sign (linguistics)]]: a combination of a concept and a sound-image described by Ferdinand de Saussure
* In [[mathematics]], the [[sign (mathematics)|sign of a number]] tells whether it is [[positive and negative numbers|positive or negative]]. Also, the [[sign of a permutation]] tells whether it is the product of an [[parity (mathematics)|even or odd]] number of [[transposition (mathematics)|transpositions]].
* [[Signedness]], in computing, is the property that a representation of a number has one [[bit]], the sign bit, which denotes whether the number is non-negative or negative.  A number is called signed if it contains a sign bit, otherwise unsigned. See also [[signed number representation]]
* Sign, in [[biology]]: an indication of some living thing's presence
* [[Medical sign]], in [[medicine]]: objective evidence of the presence of a disease or disorder, as opposed to a [[symptom]], which is subjective
* [[Sign (semiotics)]]: the basic unit of meaning
* [[Information sign]]: a notice that instructs, advises, informs or warns [[people]]
* [[Traffic sign]]: a sign that instructs drivers; see also [[stop sign]], [[speed limit]] sign, [[cross walk]] sign
* Sign, in a [[writing system]]: a basic unit. Similar terms which are more specific are character, letter or [[grapheme]]
* [[Commercial signage]], including [[flashing sign]]s, such as on a retail store, factory, or theatre
* [[Signature]], in history: a handwritten depiction observed on a document to show authorship and will
* For marketing or advocacy purposes, a [[signage]] refers to the collective use of signs to convey a message.