Definition of compact
2 a
:having a dense structure or parts or units closely packed or joined
- a compact woolen
- compact bone
b
:not diffuse or verbose
- a compact statement
c
:occupying a small volume by reason of efficient use of space
- a compact camera
- a compact formation of troops
d
:short-bodied, solid, and without excess flesh
- He had a small, compact body that looked full of life.
- —D. H. Lawrence
3
:being a topological space and especially a metric space with the property that for any collection of open sets which contains it there is a subset of the collection with a finite number of elements which also contains it
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