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qua·ter·nar·y
 quaternary
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- pronunciation:
- kwa
t
 r
neI
ri
[or]
kw
tuhr
n
ri
- parts of speech:
- adjective, noun
- features:
- Word Combinations (adjective)
| part of speech: |
adjective |
| definition 1: |
consisting of four, or grouped in fours.
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| definition 2: |
(cap.) of, relating to, or designating the latest geological period of the Cenozoic Era that includes the present and began approximately 1.8 million years ago, marked by widespread glaciers, the appearance of humans, and the development of human culture.
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| part of speech: |
noun |
| inflections: |
quaternaries |
| definition 1: |
a group of four, or the fourth in such a group.
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| definition 2: |
(cap.) the Quaternary Period, or the rock formations that date from that time.
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