Student Dictionary

2 entries found for tertiary.
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Main Entry: ter·ti·ary
Pronunciation: primarystresstschwar-shemacron-secondarystresser-emacron
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

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