quaternary

IPA: kwˈɑtɝnɛri

(chemistry) A quaternary compound.
(geology) The Quaternary period or the system of deposits laid down during it.
(geology) The geological period of the Cenozoic Era immediately following the Tertiary. It is subdivided into the Pleistocene and the Holocene Epochs.

Examples of "quaternary" in Sentences

Other injuries caused by an explosion, such as burns, are called quaternary injuries.
The quaternary is the most perfect number, and the root of other numbers, and of all things.
The current one is known as the quaternary glaciation and started about 4 million years ago.
Use of sanitizers such as quaternary ammonium compounds that destroy the live components of milk.
But basically we are in what is called the quaternary period and for the past 200,000 years we have been going in and out of ice ages.
The scientists explain that so-called quaternary amine-treated organoclays have been pioneering nanoparticles in the field of plastics nanotechnology.
TIERNO: That you should leave that material wet for ten minutes because these wipes have what's called quaternary ammonium compounds in them, and that takes at least ten minutes to really effectively work.
This leaves the scale a decimal scale still, even while it may justly be called quaternary; and produces one of the most singular and interesting instances of number-system formation that has ever been observed.
Inspired by this, the researchers created a highly reactive and selective chemical component referred to as a quaternary centre that, because of structural similarities, also drives the essential first step in the kapakahines synthesis.