In general linguisticsFerdinand de Saussure described a sign as a combination of a concept and a sound-image. A sound image is something mental as it is possible to talk to oneself without actually moving the lips. But normally the sound-images are used to produce an utterance. Jump to: navigation, search Broadly conceived, linguistics is the scientific study of human language, and a linguist is someone who engages in this study. ... Saussure Ferdinand de Saussure (November 26, 1857 - February 22, 1913) was a Swiss linguist. ...
So a sign consists of:
a concept - respectively the signified (signifié)
a sound-image - respectively the signifier (signifiant), or phonological form in generative terms..
References
Saussure, Ferdinand de (1916). Nature of the Linguistics Sign. In Charles Bally & Albert Sechehaye (Ed.), Cours de linguistique générale. McGraw Hill Education. ISBN 0070165246.
LINGUISTICS[linguistics] scientific study of language, covering the structure (morphology and syntax; see grammar), sounds (phonology), and meaning (semantics), as well as the history of the relations of languages to each other and the cultural place of language in human behavior.
Through the comparison of language structures, such 19th-century European linguists as Jakob Grimm, Rasmus Rask, Karl Brugmann, and Antoine Meillet, as well as the American William Dwight Whitney, did much to establish the existence of the Indo-European family of languages.
In contrast to theoretical schools of linguistics, workers in applied linguistics in the latter part of the 20th cent.