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quaternary    音标拼音: [kw'ɑtɚn,ɛri]
a. 由四要素形成的

由四要素形成的

quaternary
四进制的

quaternary
四进 四元

quaternary
adj 1: consisting of or especially arranged in sets of four;
"quaternate leaves"; "a quaternary compound" [synonym:
{quaternate}, {quaternary}]
2: 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" [synonym: {fourth}, {4th}, {quaternary}]
n 1: last 2 million years [synonym: {Quaternary}, {Quaternary
period}, {Age of Man}]
2: the cardinal number that is the sum of three and one [synonym:
{four}, {4}, {IV}, {tetrad}, {quatern}, {quaternion},
{quaternary}, {quaternity}, {quartet}, {quadruplet},
{foursome}, {Little Joe}]

Quaternary \Qua*ter"na*ry\, n. [L. numerus quaternarius: cf. F.
quaternaire.]
1. The number four. --Boyle.
[1913 Webster]

2. (Geol.) The Quaternary age, era, or formation. See the
Chart of {Geology}.
[1913 Webster]


Quaternary \Qua*ter"na*ry\, a. [L. quaternarius consisting of
four each, containing four, fr. quaterni four each, fr.
quattuor four: cf. F. quaternaire. See {Four}.]
[1913 Webster]
1. Consisting of four; by fours, or in sets of four.
[1913 Webster]

2. (Geol.) Later than, or subsequent to, the Tertiary;
Post-tertiary; as, the Quaternary age, or Age of man.
[1913 Webster]

41 Moby Thesaurus words for "quaternary":
Little Joe, biquadrate, biquadratic, four, four-legged,
four-part diaphony, four-rayed, foursome, foursquare, quad,
quadrangle, quadrature, quadrennium, quadric, quadrilateral,
quadrille, quadrinomial, quadrivalent, quadruped, quadruplet,
quartet, quartic, quartile, quatern, quaternion, quaternity,
quatrefoil, rectangle, square, square dance, squaring, tetractinal,
tetrad, tetragon, tetragram, tetragrammaton, tetrahedron,
tetralogy, tetraphony, tetrapody, tetravalent


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  • Quaternary - Wikipedia
    The Quaternary covers the time span of glaciations classified as the Pleistocene, and includes the present interglacial time-period, the Holocene This places the start of the Quaternary at the onset of Northern Hemisphere glaciation approximately 2 6 million years ago (mya)
  • Quaternary | Definition, Period, Climate, Animals, Plants, Timeline . . .
    Quaternary, in the geologic history of Earth, a unit of time within the Cenozoic Era, beginning 2,588,000 years ago and continuing to the present day
  • QUATERNARY Definition Meaning - Merriam-Webster
    The meaning of QUATERNARY is of, relating to, or consisting of four units or members
  • Quaternary | An Open Access Journal from MDPI
    Quaternary is an international, peer-reviewed, open access journal that covers all aspects within quaternary science, embracing the whole range of scientific fields related to geological, geographical, biological, physical, chemical, environmental and human sciences
  • Quaternary glaciation - Wikipedia
    The entire Quaternary period, starting 2 58 Ma, is referred to as an ice age because at least one permanent large ice sheet—the Antarctic ice sheet —has existed continuously
  • Quaternary Period—2. 58 MYA to Today - U. S. National Park Service
    The Quaternary Period is famous for the many cycles of glacial growth and retreat, the extinction of many species of large mammals and birds, and the spread of humans
  • Quaternary - Climate, Flora, Fauna | Britannica
    It is a basic tenet of ecology that disturbance increases diversity and ultimately leads to evolutionary pressures The Quaternary is replete with forces of disturbance and evidence for evolution in many living systems
  • Quaternary Period - an overview | ScienceDirect Topics
    The Quaternary Period is defined as the most recent geologic era spanning the last 2 6 million years, divided into the Pleistocene and Holocene epochs, characterized by significant climatic oscillations and the evolution of modern flora and fauna, including Homo sapiens
  • Quaternary Period Information and Facts | National Geographic
    Climate change and the developments it spurs carry the narrative of the Quaternary, the most recent 2 6 million years of Earth's history Glaciers advance from the Poles and then retreat, carving
  • Open Quaternary
    The journal focuses on all aspects of the Quaternary This scope is intentionally broad, and covers a range of specialisms such as geomorphology, palaeoclimatology, palaeobotany, palynology, palaeontology, zooarchaeology, geoarchaeology, biological anthropology and Palaeolithic archaeology





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