Explanation
Semantic broadening is a diachronic process in which the range of uses of a linguistic expression increases. A word that initially designates a more narrowly defined class, situation, or property becomes applicable to additional referents or contexts. This may occur through metaphorical or metonymic transfer, technological innovation, social generalisation, or recurrent bridging contexts. The older meaning need not disappear; it often remains as a specialised sense within a polysemous structure. A single creative metaphor does not yet constitute established broadening unless the new use becomes conventional or communally recognisable. Polysemy, moreover, is a synchronic state involving several readings, whereas semantic broadening describes a historical path by which they arose. The movement follows a designation as it crosses its previous boundary, incorporates new cases, and thereby changes the internal organisation of its semantic field.
Movement of thought
1. An expression initially has a comparatively narrow range of typical uses established within a speech community. 2. New objects or situations become connected with it through similarity, contiguity, innovation, or recurring contexts. 3. The transferred use is understood, repeated, and eventually stabilised as a regular additional application within the repertoire. 4. A counter-test examines historical evidence and separates broadening from one-off metaphor, homonymy, synchronic polysemy, and narrowing. 5. The expression returns with wider range; its older meaning persists, shifts, or becomes a special case within the new field.
Scientific use case
Historical semantics, lexicography, and corpus linguistics date new collocations and referent classes, trace frequency and conventionalisation, and test metaphorical, metonymic, or technological bridging contexts.
Example
“Mouse” originally designated the animal and was extended to the computer input device because of perceived shape; both uses are now conventional and distinguishable.
Counterexample
A poet once calls the moon a “lamp of night,” but the community does not subsequently use “lamp” regularly for celestial bodies. Creative transfer alone is not yet semantic broadening.
Distinction
Distinguish it from semantic narrowing, semantic change as a superordinate category, polysemy, homonymy, metaphor, metonymy, generalisation, and one-off referential extension; demonstrate diachronic conventionalisation.
Effect on thought and perception
Semantic broadening makes existing words usable for new experience and densifies lexical networks; it can also produce ambiguity, generational differences, and disputes about appropriate use.
Resonance
A word crosses its former boundary and receives new objects into its field of sound; every new use also changes the echo of the earlier sense.
Cite this entry
Reich, Michael (Hrsg./ed.): „Extension of meaning“. Atlas der Sprache, AT-W3-0280. ATLAS 260, data model 1.6.0. https://atlasoflanguage.com/concept/AT-W3-0280The address remains stable; editorial content may evolve. Editorial reading state: 2026-10-15. Include your access date for precise references.
Historical background
Bréal treats expansion of meaning as a historical change in application rather than an automatic increase in conceptual precision. A word can remain recognisable while the situations or objects to which it applies become more numerous. The chapter places such changes in social history, although its individual etymological examples must be checked independently before they become Atlas evidence. For the present profile, the analytical movement is from a familiar instance towards a wider class, followed by a test of what has been retained. Wider extension need not preserve every association carried by the earlier use. Nor should one speaker’s inventive comparison automatically count as established semantic change. The English translation anchors this conceptual account, not the first use of the compound extension of meaning or every later theory of broadening.
How conceptual history changes the analysis
Ask what survives the wider application. One inventive comparison does not by itself establish a conventional broadening of meaning.
References for the historical section
- Michel Bréal, Semantics: Studies in the Science of Meaning, translated by Mrs. Henry Cust, preface by J. P. Postgate, 1900; Internet Archive item semanticsstudie01postgoog, OCR witness · Chapter XI, Expansion of Meaning, opening, pp. 115–117
Selected passage, not a complete genealogy or an English first-attestation claim. Original Atlas applications are editorial interpretations, not reported experiments. Selected English OCR passages read, not collated against page images. The OCR title page says New York: Henry Holt, MDCCCC; the item catalogue says London: Heinemann. This discrepancy is retained for facsimile review. OCR omits or corrupts parts of the text; only readable passages are used. Postgate’s preface is not attributed to Bréal. No English first-use claim from this translation.
- Michel Bréal, Semantics: Studies in the Science of Meaning, translated by Mrs. Henry Cust, preface by J. P. Postgate, 1900; Internet Archive item semanticsstudie01postgoog, OCR witness · Chapter XI, Expansion of Meaning, opening, pp. 115–117
Selected passage, not a complete genealogy or an English first-attestation claim. Original Atlas applications are editorial interpretations, not reported experiments. Selected English OCR passages read, not collated against page images. The OCR title page says New York: Henry Holt, MDCCCC; the item catalogue says London: Heinemann. This discrepancy is retained for facsimile review. OCR omits or corrupts parts of the text; only readable passages are used. Postgate’s preface is not attributed to Bréal. No English first-use claim from this translation.