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Vocabulary Entry
quaternary
|adjective • noun
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A
adjective
Relating to the fourth in order or rank.
Example Sentences
"The quaternary period is characterized by significant geological changes."
"In a quaternary structure, proteins are made up of multiple polypeptide chains."
"The study of quaternary climate changes helps us understand modern environmental issues."
N
noun
The fourth in a series or sequence; specifically, the fourth geological period in the Cenozoic Era.
Example Sentences
"Geologists often refer to the quaternary as the period of human evolution."
"Fossils from the quaternary provide insight into ancient ecosystems."
"During the quaternary, ice ages significantly shaped the Earth's landscape."