1 compress sth (into sth) to make sth fill less space than usual 压缩: Divers breathe compressed air from tanks. 潜水员呼吸贮气罐里的压缩空气。He found it hard to compress his ideas into a single page. 他发现很难把自己的想法扼要地写在一页纸上。

2 (computing计算机技术) to make computer files, etc smaller so that they use less space on a disk, etc 压缩（使计算机文档少占磁盘等的空间） [OPP] decompress 反义词为decompress➔compression /kəmˈpreʃn ||; kəmˈprɛʃən/ noun [U]