Différance

Différance is a French term coined by Jacques Derrida. Roughly speaking, the method of différance is a way to analyze how signs (words, symbols, metaphors, etc) come to have meanings. It suggests that meaning is not inherent in a sign but arises from its relationships with other signs, a continual process of contrasting with what comes before and later. That is, a sign acquires meaning by being different from other signs. The meaning of a sign changes over time, as new signs keep appearing and old signs keep disappearing. It is central to Derrida's concept of deconstruction, a critical outlook concerned with the relationship between text and meaning.

However, the meaning of a sign is not just determined by the system of signs present currently. Past meanings leave "traces", and possible future meanings "haunt". The meaning of a sign is determined by the interaction between past traces, future haunts, and the system of signs present right now.