noun
Computing term for data compression where some information is lost, as opposed to lossless compression.
JPEGは非可逆圧縮の代表的な画像フォーマットです。
JPEG is a typical image format that uses lossy compression.
Lossless compression; the opposite of 非可逆圧縮, where no data is lost.
Compound of 非 (non-), 可逆 (reversible), and 圧縮 (compression), literally 'non-reversible compression'.