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quaternary |
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quaternary 1. Chem containing or being an atom bound to four other atoms or groups 2. Maths having four variables Quaternary 1. of, denoting, or formed in the most recent period of geological time, which succeeded the Tertiary period nearly two million years ago 2. the. the Quaternary period or rock system, divided into Pleistocene and Holocene (Recent) epochs or series |
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A naturalist, struck by a parallelism of this nature in any one class, by arbitrarily raising or sinking the value of the groups in other classes (and all our experience shows that this valuation has hitherto been arbitrary), could easily extend the parallelism over a wide range; and thus the septenary, quinary, quaternary, and ternary classifications have probably arisen. |
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