ORDOVICIAN as NOUN

1. Meaning
   • from 500 million to 425 million years ago
   • conodonts and ostracods and algae and seaweeds
   Synonym(s)
   • Ordovician period (what does Ordovician period mean?)
   Hypernyms(s) Ordovician is a kind of… Example: animal is a hypernym of mammal, plant is a hypernym of flower
   • period (what does period mean?)
   • geological period (what does geological period mean?)