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Meaning of Silurian

Si•lu•ri•an

Pronunciation: (si-loor'ē-un, sī-), [key]
— adj.
  1. of or pertaining to the Silures or their country.
  2. noting or pertaining to a period of the Paleozoic Era, occurring from 425 to 405 million years ago, notable for the advent of air-breathing animals and terrestrial plants. See table under
—n.
  1. the Silurian Period or System of rocks.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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