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Science & Tech > Earth > Periods


Now updated for CSW15. New words, if any, and new inflections of existing words, are shown in red.


azoic lacking life, esp of geological period.
carboniferous bearing carbon.
cenozoic relating to the most recent geologic era.
devonian relating to a type of rock formed in the fourth period of the Palaeozoic era.
eocene of rock formed in the second epoch of the Tertiary geological period.
holocene relating to the second and most recent epoch of the Quaternary period.
jurassic relating to the second period of the Mesozoic era.
liassic of, relating to, or being a subdivision of the European Jurassic.
mesozoic of the Secondary geological period, including the Triassic, Jurassic, and Cretaceous systems.
miocene denoting the fourth epoch of the Tertiary period.
neogene relating to the Miocene or Pliocene epochs.
neolithic of or relating to the later, more advanced, Stone Age.
oligocene belonging to a certain geological time period.
palaeolithic of the earlier Stone Age.
paleocene belonging to a certain geological time period.
paleogene belonging to a certain geological time period.
paleolithic of or relating to the earliest period of the Stone Age characterized by rough or chipped stone implements.
paleozoic belonging to a certain geological time period.
permian relating to the last period of the Palaeozoic era.
pleiocene of the Pliocene geological time period.
pliocene of the Pliocene geological time period.
silurian formed in the third period of the Palaeozoic.
triassic relating to the first period of the Mesozoic era.