DictionaryexpandIncrease in size or scope
verb

expand

ik-SPAND/ɪkˈspænd/

To increase the size or extent of something.

The balloon expands as the child blows air into it.

An East Asian child inflates a large balloon, stretched taut and round, cheeks gently puffed, no extra before-after objects.
Etymology

The pieces mean “spread out,” giving the image of something unfolding or stretching over more space. This connects physical enlargement with making a subject broader or more detailed.

In context

Free Documentary23:46
Miss Lee also wants to become a tour guide when she graduates from a tourism school. The new bridge may very well help expand her career opportunities.
World's Longest Cross Sea Bridge | China's Mega Projects | Free Documentary

More examples

  • The bakery plans to expand its kitchen.
  • Reading widely expands your knowledge of the world.
  • Could you expand on your idea for the project?

Forms

expand · expands · expanded · expanding

expansion noun — An increase in size, extent, or scope.

expandable adjective — Able to become larger in size.

Similar words

enlarge
Enlarge usually emphasizes physical size rather than broader scope.
extend
Extend emphasizes greater length, duration, or reach rather than volume.
broaden
Broaden emphasizes greater width or a wider range of possibilities.