| geological time | (n) the time of the physical formation and development of the earth (especially prior to human history), Syn. geologic time |
| 地质年代表 | [地 质 年 代 表 / 地 質 年 代 表] geological time scale [Add to Longdo] |
| 地質年代 | [ちしつねんだい, chishitsunendai] (n) geological time [Add to Longdo] |