6 entries under expression topic. ×
| geologic time scale(geology, time, scale) | |
| geological age(geology, time, age) | |
| geological eon(geology, time, eon) | |
| geological epoch(geology, time, epoch) | |
| geological era(noun, geology, time, era) | |
| geological period(noun, geology, time, period) |
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| APA | Smart Define. (2013). geologic time thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/geologic_time/thesaurus/narrower |
| Chicago | Smart Define. 2013. "geologic time thesaurus" https://smartdefine.org/geologic_time/thesaurus/narrower (accessed September 21, 2026). |
| Harvard | Smart Define 2013, geologic time thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/geologic_time/thesaurus/narrower>. |
| MLA | Smart Define. "geologic time thesaurus" 18 May 2013. Web. 21 September 2026. <https://smartdefine.org/geologic_time/thesaurus/narrower> |