| quaternary ammonium compound |
a compound derived from ammonium with hydrogen atoms replaced by organic groups; used as surface-active agents, disinfectants, and in drugs
출처: wordnet.princeton.edu/perl/webwn
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| quaternary |
last 2 million years quaternate: consisting of or especially arranged in sets of four; "quaternate leaves"; "a quaternary compound" fourth: coming next after the third and just before the fifth in position or time or degree or magnitude; "the quaternary period of geologic time extends from the end of the tertiary period to the present" four: the cardinal number that is the sum of three and one
출처: wordnet.princeton.edu/perl/webwn
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| quaternary structure |
In biochemistry, many proteins are actually assemblies of more than one protein (polypeptide) molecule, which in the context of the larger assemblage are known as protein subunits. In addition to the tertiary structure of the subunits, multiple-subunit proteins possess a quaternary structure, which is the arrangement into which the subunits assemble. ...
출처: en.wikipedia.org/wiki/Quaternary_structure
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| quaternary |
The four lower "principles in man," those which constitute his personality (ie, Body, Astral Double, Prana or life, organs of desire and lower Manas, or brain-mind), as distinguished from the Higher Ternary or Triad, composed of the higher Spiritual Soul, Mind and Atman (Higher Self).
출처: www.theosociety.org/pasadena/key/key-glo3.htm
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| quaternary |
The period of geological time, a sub-era of the Cenozoic, which covers the last 1.6 million years; comprises the Pleistocene ("Ice Age") and the Holocene epochs to the present and is noted for numerous major ice sheet advances in the northern hemisphere.
출처: biology.usgs.gov/s+t/SNT/noframe/zy198.htm
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