The meaning of EXPANSION is expanse. How to use expansion in a sentence.

EXPANSION meaning: 1. the increase of something in size, number, or importance: 2. the increase of something in size…. Learn more.

Expansion is usually due to heating. When substances are heated, the molecular bonds between their particles are weakened, and the particles move faster, causing the substance to expand.

an act of increasing or making something increase in size, amount or importance. Despite the recession the company is confident of further expansion. The expansion of higher education …

1. the act or process of expanding. 2. the state or quality of being expanded. 3. the amount or degree of expanding. 4. an expanded portion or form of a thing.

Expansion is the process of becoming greater in size, number, or amount. ...the rapid expansion of private health insurance.

Expansion (geometry), stretching of geometric objects with flat sides Expansion (model theory), in mathematical logic, a mutual converse of a reduct Expansion card, in computing, a printed …

Oct 31, 2025 · Borrowed from French expansion, from Latin expānsiō. By surface analysis, expand +‎ -sion.

There are 14 meanings listed in OED's entry for the noun expansion, two of which are labelled obsolete. See ‘Meaning & use’ for definitions, usage, and quotation evidence.

EXPANSION meaning: 1 : the act of becoming bigger or of making something bigger the act of expanding; 2 : a more complete and detailed written work or set of comments based on …