2 entries found for tertiary.
To select an entry, click on it. Main Entry: ter·ti·ary
Pronunciation:
t
r-sh
-
er-Function: adjective
1 : of third rank, importance, or value
2 capitalized : of, relating to, or being the earliest period of the Cenozoic era of geological history marked by the formation of high mountains (as the Alps and Himalayas) and the rise in importance of mammals on land; also : relating to the corresponding system of rocks -- see GEOLOGIC TIME table
Pronunciation Symbols