SILURIAN PERIOD

Pronunciation (US):

(GB):

 Dictionary entry overview: What does Silurian period mean? 

• SILURIAN PERIOD (noun)
  The noun SILURIAN PERIOD has 1 sense:

1. from 425 million to 405 million years ago; first air-breathing animals

  Familiarity information: SILURIAN PERIOD used as a noun is very rare.

 Dictionary entry details 

• SILURIAN PERIOD (noun)

Sense 1

Meaning:

From 425 million to 405 million years ago; first air-breathing animals

Classified under:

Nouns denoting time and temporal relations

Synonyms:

Silurian; Silurian period

Instance hypernyms:

geological period; period (a unit of geological time during which a system of rocks formed)

Holonyms ("Silurian period" is a part of...):

Paleozoic; Paleozoic era (from 544 million to about 230 million years ago)