Medical Definition expansion noun ex· pan· sion ik-ˈspan-chən 1 : the act or process of expanding

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.

Define expansion. expansion synonyms, expansion pronunciation, expansion translation, English dictionary definition of expansion. n. 1. a. The act or process of expanding: the new nation's …

Expansion is the part of an engine cycle in which the fluid increases in volume and makes a part such as a piston or flywheel move. The expansion of the gas pushes the piston inside the cylinder. The …

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

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.

The act or process of expanding. The expansion of metals and plastics in response to heat is well understood.

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 something …

Expansion is what happens when something becomes bigger or more extensive. If you enjoy good pastry, you will be excited by the expansion of the bakery, but be careful or you will also see the …