To Compress

1. (transitive) To make smaller; to press or squeeze together, or to make something occupy a smaller space or volume.
2. (intransitive) To be pressed together or folded by compression into a more economic, easier format.
3. (transitive) To condense into a more economic, easier format.
4. (transitive) To abridge.
5. (technology, transitive) To make digital information smaller by encoding it using fewer bits.
6. (obsolete) To embrace sexually.

Synonyms

• (press together): compact, condense, pack, press, squash, squeeze
• (be pressed together): contract
• (condense, abridge): abridge, condense, shorten, truncate

Antonyms

• (press together): expand
• (be pressed together): decontract
• (condense, abridge): expand, lengthen
• (make computing data smaller): uncompress