Synonyms of expansion in English:

expansion


See US English definition of expansion

See UK English definition of expansion

See Spanish definition of expansión

noun

1‘the expansion and contraction of blood vessels’

SYNONYMS
enlargement, increase in size, swelling, distension, dilation
lengthening, elongation, stretching, thickening
Medicine dilatation
ANTONYMS

contraction

2‘the expansion of the company’

SYNONYMS
growth, increase in size, enlargement, extension, augmentation, development, evolution
diversification, build-up, buildout, scaling up, aggrandizement
spread, proliferation, mushrooming, multiplication
rare evolvement
ANTONYMS

reduction in size

3‘the book is an expansion of a lecture given last year’

SYNONYMS
elaboration, enlargement, amplification, development
embellishment
ANTONYMS

summary, abridgement