| geologic time n. The period of time covering the physical formation and development of Earth, especially the period prior to human history. |   |
geologic time (j   -l j  k) The period of time covering the formation and development of the Earth, from about 4.6 billion years ago to today. |  |
ThesaurusLegend: Synonyms Related Words Antonyms
| Noun | 1. |  geologic time - the time of the physical formation and development of the earth (especially prior to human history)time - the continuum of experience in which events pass from the future through the present to the past geological period, period - a unit of geological time during which a system of rocks formed; "ganoid fishes swarmed during the earlier geological periods" geological era, era - a major division of geological time; an era is usually divided into two or more periods epoch - a unit of geological time that is a subdivision of a period and is itself divided into ages |
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