Triassic

adjective
Tri·​as·​sic | \trī-ˈa-sik \

Definition of Triassic 

: of, relating to, or being the earliest period of the Mesozoic era or the corresponding system of rocks marked by the first appearance of the dinosaurs — see Geologic Time Table

Other Words from Triassic

Triassic noun

First Known Use of Triassic

1841, in the meaning defined above

History and Etymology for Triassic

International Scientific Vocabulary, from Latin trias triad; from the three subdivisions of the European Triassic — more at triad

Keep scrolling for more

Learn More about Triassic

Statistics for Triassic

Look-up Popularity

Time Traveler for Triassic

The first known use of Triassic was in 1841

See more words from the same year

More from Merriam-Webster on Triassic

See words that rhyme with Triassic

Comments on Triassic

What made you want to look up Triassic? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

full of whispering sounds

Get Word of the Day daily email!

Test Your Vocabulary

Difficult Vocab Quiz

  • the-education-of-achilles-eugne-delacroix
  • Which is a synonym of discomfit?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!