| Subject | English | Japanese |
| tech. | axial compression ratio | 軸圧比 (じくあっひ) |
| gen. | compression ratio | 圧縮比 (asshuku-hi) |
| gen. | n compression ratio | 圧縮率 (asshukuritsu) |
| video. | luminance compression ratio | 白圧縮率 |
| construct. | maximum compression ratio | 最大圧縮比 (さいだい・あっしゅく・ひ) |
| gen. | variable compression ratio engine | 可変圧縮比エンジン |