💡 Words with a Similar Meaning to "Upper boundary"
Found via reverse dictionary — words that share a conceptual meaning.
| Word | Definition |
|---|---|
| lower boundarynoun | (geology) The most ancient time encompassed by a given geological period. |
| horizonnoun | The visible horizontal line (in all directions) where the sky appears to meet the earth in the distance. |
| deep timenoun | Synonym of geologic time. |
| archaicnoun | (archaeology, US, usually capitalized) The prehistoric period intermediate between the earliest period (‘Paleo-Indian’, ‘Paleo-American’, ‘American‐paleolithic’, etc.) of human presence in the Western Hemisphere, and the most recent prehistoric period (‘Woodland’, etc.). |
| urlanguagenoun | (linguistics) A basic or original language; proto-language. |
| antiquitynoun | Ancient times; faraway history; former ages. |
| geochronologynoun | (uncountable) The science of dating samples of rock or sediment. |
| subepochnoun | (geology) A geochronologic unit comprising one or more ages, being a period of generally agreed significance within an epoch. |
| stone agenoun | (archaeology, paleontology) A broad prehistoric period during which humans widely used stone for toolmaking. |
| ancestornoun | One from whom a person is descended, whether on the father's or mother's side, at any distance of time; a progenitor; a forefather; a forebear. |
| archaeozoicnoun | (geology) Of or pertaining to the Archaeozoic. |
| archæozoicnoun | Obsolete form of Archaeozoic. [(geology) Period of time determined to exist prior to 2.5 thousand million years ago.] |
| paleolinguisticsnoun | The study of prehistoric languages using linguistic evidence alone to try to reconstruct them. |
| archeological horizonnoun | Alternative form of archaeological horizon. [(archaeology) A common set of artefacts that identifies a culture and is found disseminated widely (usually over a number of sites, but sometimes widely over one site) but restricted to a single stratum; a layer or stratum.] |
| epochnoun | A particular period of history, or of a person's life, especially one considered noteworthy or remarkable. |
| archaic egyptiannoun | (linguistics, history) The Egyptian language as written and spoken during the Early Dynastic Period, before the time of the earliest attested complete sentences. |
| antiquitienoun | Obsolete form of antiquity. [Ancient times; faraway history; former ages.] |
| prehistorynoun | The time before written records in any area of the world; the events and conditions of those times. |
| archaeological horizonnoun | (archaeology) A common set of artefacts that identifies a culture and is found disseminated widely (usually over a number of sites, but sometimes widely over one site) but restricted to a single stratum; a layer or stratum. |
| archaeolinguisticsnoun | The study of the distant human past using archaeological and linguistic evidence together to reconstruct aspects of past cultures. |
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