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

EXPANSION definition: 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.

The runway is undergoing expansion to allow bigger planes to land there. [countable] an expanded portion or form of a thing: The book is an expansion of a series of articles.

Definition of expansion noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

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.

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.

Synonyms for EXPANSION: increase, boost, addition, gain, rise, augmentation, raise, increment; Antonyms of EXPANSION: reduction, decrease, loss, shrinkage, depletion, decline, diminution, lowering

/ ɪkˈspæn.ʃən/ the action of getting larger: the rapid expansion of the software industry (Definition of expansion from the Webster's Essential Mini Dictionary © Cambridge University Press)

B2 an increase in the size or amount of something: the rapid expansion of the software industry (Definition of expansion from the Cambridge Learner's Dictionary © Cambridge University Press)