Precambrian meaning

prē-kăm'brē-ən, -kām'-
Of, relating to, or being the geologic time period between Hadean Time and the Cambrian Period, often subdivided into the Archean and Proterozoic Eras, comprising most of the earth's history and marked by the appearance of primitive forms of life.
adjective
0
0
The Precambrian Eon.
noun
0
0
Designating or of the division of geologic time covering all the time before the Cambrian Period, equivalent to the Archean Eon and the Proterozoic Eon.
adjective
0
0
The period of geologic time between Hadean Time and the Phanerozoic Eon, from about 3.8 billion to 540 million years ago. During the Precambrian Eon, which is divided into the Archean and Proterozoic, primitive forms of life first appeared on Earth.
0
0
the Precambrian
  • The Precambrian time or its rocks.
idiom
0
0
Advertisement

Idioms and Phrasal Verbs

the Precambrian