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Quaternary

speaker
speaker

Meaning

Adj

In Four:
Of
or order
In Four:
Relating to or in number
four
In Organic chemistry & Four:
quaternary ammonium
In Inorganic chemistry & Four:
composed of
elements

Noun

In Chemistry:
A
compound.
In Geology:
The Quaternary
or the system of
during it.

Name

The
of the Cenozoic Era
the Tertiary. It is
into the Pleistocene and the Holocene Epochs.
Sourced from
Wiktionary
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