expansion

[ ik-span-shuh n ]
/ ɪkˈspæn ʃən /

noun

Origin of expansion

1605–15; < Late Latin expānsiōn- (stem of expānsiō) a spreading out. See expanse, -ion

OTHER WORDS FROM expansion

Example sentences from the Web for expansion

British Dictionary definitions for expansion

expansion
/ (ɪkˈspænʃən) /

noun

Derived forms of expansion

expansionary, adjective

Medical definitions for expansion

expansion
[ ĭk-spănshən ]

n.

An increase in size.
The spreading out of a structure, such as a tendon.

Scientific definitions for expansion

expansion
[ ĭk-spănshən ]

An increase in the volume of a substance while its mass remains the same. 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.
A number or other mathematical expression written in an extended form. For example, a2 + 2ab + b2 is the expansion of (a + b)2.