Meaning of PERIOD in English


In geology, the basic unit of the geologic time scale.

During these spans of time, specific systems of rocks were formed. Originally, the method for defining the sequence of periods was relative; it was based on stratigraphy and paleontology .


[c mediumvioletred] (as used in expressions)

Baroque period

Cambrian Period

Carboniferous Period

Cretaceous Period

Devonian Period

Genroku period

Heian period

Heisei period

Jurassic Period

Kamakura period

Meiji period

Mesolithic Period

Mississippian Period

Muromachi period

Nara period

Neolithic Period

Ordovician Period

Paleolithic Period

Pennsylvanian Period

Permian Period

Quaternary Period

Showa period

sidereal period

Silurian Period

Spring and Autumn period

synodic period

Taisho period

{{link=Tertiary Period">Tertiary Period

Tokugawa period

Triassic Period

Warring States period

Britannica English dictionary.      Английский словарь Британика.