Children's, Intermediate and Advanced Online English Dictionary & Thesaurus

Comprehensive
Dictionary Suite
Help
Help
Help
 
Advanced Dictionary    
Display options
 
Lookup History
Silurian

Si·lu·ri·an

Silurian

 
pronunciation:
sih lu ri n
parts of speech:
adjective, noun
part of speech: adjective
definition: of, relating to, or designating the geological period between the Ordovician and Devonian of the Paleozoic Era, from approximately 440 million to 400 million years ago, when coral reefs began forming and land plants and air-breathing animals appeared.
 
part of speech: noun
definition: the Silurian Period, or the rock formations that date from that time.