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

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

Or·do·vi·cian

Ordovician

 
pronunciation:
or d vI shn
parts of speech:
adjective, noun
features:
Word Combinations (adjective)
part of speech: adjective
definition: of, relating to, or designating the geological period between the Cambrian and Silurian of the Paleozoic Era, from approximately 500 million to 440 million years ago, when marine invertebrate animals were abundant.
Word CombinationsSubscriber feature About this feature
 
part of speech: noun
definition: the Ordovician Period, or the rock formations that date from that time.