ORDOVICIAN PERIOD

Pronunciation (US):

(GB):

 Dictionary entry overview: What does Ordovician period mean? 

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

1. from 500 million to 425 million years ago; conodonts and ostracods and algae and seaweeds

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

 Dictionary entry details 

• ORDOVICIAN PERIOD (noun)

Sense 1

Meaning:

From 500 million to 425 million years ago; conodonts and ostracods and algae and seaweeds

Classified under:

Nouns denoting time and temporal relations

Synonyms:

Ordovician; Ordovician period

Instance hypernyms:

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

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

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