| 释义 |
PleistoceneenUK
Pleis·to·cene P0370500 (plī′stə-sēn′)adj. Of, relating to, or being the epoch of geologic time from about 2.6 million to 12,000 years ago, the older of the two epochs of the Quaternary Period. It is characterized by the alternate appearance and recession of northern glaciation, the appearance and worldwide spread of hominins, and the extinction of numerous land mammals, such as the mammoths, mastodons, and saber-toothed tigers. See Table at geologic time.n. The Pleistocene Epoch.
[Greek pleistos, most; see pelə- in Indo-European roots + -cene.]Pleistocene (ˈplaɪstəˌsiːn) adj (Geological Science) of, denoting, or formed in the first epoch of the Quaternary period, which lasted for about 1 600 000 years. It was characterized by extensive glaciations of the N hemisphere and the evolutionary development of mann (Geological Science) the Pleistocene the Pleistocene epoch or rock series[C19: from Greek pleistos most + kainos recent]Pleis•to•cene (ˈplaɪ stəˌsin)
adj. 1. of or pertaining to the geologic epoch forming the earlier half of the Quaternary Period, beginning about two million years ago and ending ten thousand years ago, the time of the last Ice Age and the advent of modern humans. n. 2. the Pleistocene Epoch or Series. [1830–40; < Greek pleîsto(s) most (superlative of polýs much) + -cene] Pleis·to·cene (plī′stə-sēn′) The earlier of the two epochs of the Quaternary Period, from about 2 million to 10,000 years ago. The Pleistocene Epoch was characterized by the formation of widespread glaciers in the Northern Hemisphere and by the appearance of humans. See Chart at geologic time.Pleistocene, Pliocene, Miocene, Oligocene - Pleistocene means "most recent," Pliocene means "more recent," Miocene means "moderately recent," and Oligocence means "but a little recent."See also related terms for recent.Thesaurus| Noun | 1. |  Pleistocene - from two million to 11 thousand years ago; extensive glaciation of the northern hemisphere; the time of human evolutionPleistocene epoch, Glacial epochAge of Man, Quaternary, Quaternary period - last 2 million years |
Translations
PleistoceneenUK
Pleistocene of, denoting, or formed in the first epoch of the Quaternary period, which lasted for about 1 600 000 years. It was characterized by extensive glaciations of the N hemisphere and the evolutionary development of humans Pleistocene the first division, corresponding to the longest epoch, of the Anthropogenic (Quaternary) period. The Pleistocene is characterized by a general cooling of the earth’s climate and periodic occurrence of extensive continental glaciation in the middle latitudes. Some researchers, including the Soviet geologist V. I. Gromov, classify the beginning of the Pleistocene as a separate epoch preceding the Pleistocene proper. This separate epoch, called the Eopleistocene, includes the Upper (Late) Pliocene, which is classified by most researchers in the Neogene. The term “Pleistocene” was proposed in 1832 by the British geologist C. Lyell for the marine deposits immediately preceding deposits of the modern period because of the predominance of presently existing forms of fauna in these deposits. Pleistocene[′plī·stə‚sēn] (geology) The older of the two epochs of the Quaternary Period, spanning about 1.8 million to 10,000 years ago. It represents the interval of geological time (and rocks accumulated during that time) extending from the end of the Pliocene Epoch (and the end of Tertiary Period) to the start of the Holocene Epoch. It is commonly characterized as an epoch when the earth entered its most recent phase of widespread glaciation. Also known as Ice Age; Oiluvium. MedicalSeePleistocene epochPleistoceneenUK
Synonyms for Pleistocenenoun from two million to 11 thousand years agoSynonyms- Pleistocene epoch
- Glacial epoch
Related Words- Age of Man
- Quaternary
- Quaternary period
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