Definition from macmillandictionary.com
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The water froze inside the pipe, causing it to expand and burst.
We live in an expanding universe.
We plan to expand the pub by adding a family room.
Britain’s universities expanded at an unprecedented rate at the end of the 20th century.
the rapidly expanding IT sector
The group has expanded into Germany.
The EU could be expanded to include former communist countries.
I refuse to expand any further on my earlier statement.
The hawk expanded its wings and soared into the sky.