1 : to press or squeeze (something) so that it is smaller or fills less space [+ obj] ▪ compress the air in a closed chamber ▪ She compressed her lips. [no obj] ▪ Her lips compressed into a frown. ▪ a material that compresses easily 2 [+ obj] : to make (something) shorter or smaller
▪ compress a chapter ▪ The author compressed [=condensed] 80 years of history into 15 pages. 3 computers : to reduce the size of (a computer file) by using special software [+ obj] ▪ compress a digital photograph [no obj] ▪ This type of file compresses easily. — opposite decompress
▪ compress a chapter ▪ The author compressed [=condensed] 80 years of history into 15 pages.
— compressed adjective
▪ a bottle of compressed air
▪ a bottle of compressed air





