ORDOVICIAN PERIOD Synonyms
There is 0 hypernym of the phrase ordovician period. (close relations)
period
Best Alternatives
| Word | Save | More Find | Usage | Type | ||
|---|---|---|---|---|---|---|
| age | nounn | |||||
noun • how long something has existed • an era of history having some distinctive feature • a time of life (usually defined in years) at which some particular qualification or power arises • a prolonged period of time • a late time of life verb • begin to seem older; get older • grow old or older • make older | ||||||
| epoch | nounn | |||||
noun • a period marked by distinctive character or reckoned from a fixed point or event • (astronomy) an arbitrarily fixed date that is the point in time relative to which information (as coordinates of a celestial body) is recorded • a unit of geological time that is a subdivision of a period and is itself divided into ages | ||||||
| era | nounn | |||||
noun • (baseball) a measure of a pitcher's effectiveness; calculated as the average number of earned runs allowed by the pitcher for every nine innings pitched • a period marked by distinctive character or reckoned from a fixed point or event • a major division of geological time; an era is usually divided into two or more periods | ||||||
| geological period | noun, adjectiven, adj | |||||
noun • a unit of geological time during which a system of rocks formed | ||||||
| ordovician | noun, adjectiven, adj | |||||
noun • the period from 500 million to 425 million years ago; characterized by conodonts and ostracods and algae and seaweeds | ||||||
