Dictionary
Find
in
Dictionary
Thesaurus
Translations

Click to move up the list of words
triamcinolone
triangle
triangular
triangulate
triangulation
Triangulum
Triangulum Australe
triarchy
Triassic
triathlon
triatomic
triaxial
triazine
triazole
tribade
tribadism
tribal enrollment officer
Click to move down the list of words
Also available:

World English Dictionary
Dictionnaire Français

Triassic

Tri·as·sic [ trī ássik ]


noun 
Definition:
 
geologic period: the period of geologic time, 248 million to 206 million years ago, during which reptiles flourished and dinosaurs and evergreen forests first appeared

[Mid-19th century. < German Trias< Latin, "three, triad" < Greek]

Tri·as·sic adjective
Advertisement

© 2009 Microsoft