 4th |
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| 1. | [ adjective ] (geology) coming next after the third and just before the fifth in position or time or degree or magnitude | |
| Synonyms: | fourth quaternary | |
| Examples: | "the quaternary period of geologic time extends from the end of the tertiary period to the present" |
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| Related terms: | ordinal | |
| Similar spelling: |
14th 34th 44th 24th th 4to 5th 6th 7th 8th 9th thy Thi Tho Thu the thaw Thea Thao Thai thee Theo they tho' thou Thuy Thau |
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