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Definisjon av Proterozoic

Vi fant 3 definisjoner av Proterozoic på engelsk.

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WordNet WordNet by Princeton University

Adjective
proterozoic - formed in the later of two divisions of the Precambrian era; "proterozoic life forms"
early at or near the beginning of a period of time or course of events or before the usual or expected time; "early morning"; "an early warning"; "early diagnosis"; "an early death"; "took early retirement"; "an early spring"; "early varieties of peas and tomatoes mature before most standard varieties"
geology a science that deals with the history of the earth as recorded in rocks
= synonym
= antonym
= relatert ord

Wiktionary Wiktionary dictionary logo

Adjektiv
Proterozoic - Of, or relating to the geologic eon from about 2,500 to 570 million years ago; comprises the Paleoproterozoic, Mesoproterozoic and Neoproterozoic eras; marked by the build up of oxygen in the atmosphere and the emergence of primitive multicellular life.

Wikipedia Wiktionary dictionary logo

  • The Proterozoic is a geological eon representing a period before the first abundant complex life on Earth. The name Proterozoic comes from the Greek "earlier life". The Proterozoic Eon extended from 2500 Ma to 542.0 ± 1.0 Ma (million years ago), and is the most recent part of the old, informally named ‘Precambrian’ time.

Adjektiv - Gradbøying

  • Positiv: proterozoic
  • Komparativ: more proterozoic
  • Superlativ: most proterozoic

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