可逆 かぎゃく圧縮 あっしゅくじゃなかったです
hikagyakuasshukujanakattadesu

Noun
Desu Copula

The polite, past negative form of 非可逆圧縮

1. Wasn't lossy compression.; Wasn't irreversible compression.

Past/Perfective
Negative
Polite
Casual Register
Computing