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单词 osar
释义

osarn.

Brit. /ˈəʊsɑː/, U.S. /ˈoʊsɑr/
Inflections: Plural unchanged, (rare) osars.
Origin: Of multiple origins. Partly a borrowing from French. Partly a borrowing from Swedish. Etymons: French osar; Swedish åsar, ås.
Etymology: < French osar (1842 in the passage translated in quot. 1842) and its etymon Swedish åsar, plural of ås ridge of a hill (Old Swedish aas , cognate with Old Icelandic áss (Icelandic ás ), Norwegian ås , Danish ås , of uncertain origin; probably further cognate with Gothic ams shoulder < the same Indo-European base as classical Latin umerus shoulder (see humerus n.)).The source of quot. 1842 refers to earlier description of these ridges by A. Brongniart ( Ann. des Sci. Naturelles 14 (1828) 14); Brongniart, writing in French, uses ôse (now usually os, ôs; < Swedish ås, see above) to denote them. Compare the parallel borrowing of Swedish ås into English as os, ose (partly via French), in the same sense, occasionally attested as a singular form with plural osar; compare:1859 D. Page Handbk. Geol. Terms 279 Os, or Osar, a Swedish term for those elongated hillocks or mounds of gravel belonging to the Drift or Glacial period.1963 D. W. Humphries & E. E. Humphries tr. H. Termier & G. Termier Erosion & Sedimentation vii. 163 Outwash fans deposited at the snouts of glaciers by subglacial streams (os) [Fr. ôs]. It is possible that in some of the quots. below the plural form osar is intended as the plural of os, ose.
Geology.
A long narrow ridge or mound of sand or gravel deposited by a stream flowing beneath a glacier; = esker n. Usually in plural. Cf. kame n.
ΘΚΠ
the world > the earth > land > landscape > high land > rising ground or eminence > [noun] > glacial mound
moraine1783
osar1842
esker1852
kame1862
sow-back1874
push moraine1890
whaleback1893
recessional moraine1897
Ra1902
Salpausselkä1923
1842 Geologist 1 91 Long lines of Osars (or heaps of detrital matter) were found accompanying the erratic blocks.
1846 R. I. Murchison in Q. Jrnl. Geol. Soc. 2 i. 360 After..100 feet or more..we meet with the ‘Osar’ drift of foreign coarse boulders.
1884 Science 4 Apr. 404/1 (heading) The possible origin of some osar.
1889 G. F. Wright Ice Age N. Amer. 479 Osars and kames, whose conditions of formation were exceptional.
1902 Ohio Naturalist 2 257 (heading) A possible cause of osars.
1921 Philos. Trans. (Royal Soc.) B. 210 121 The Kilbeggan Esker, on the other hand, is like the Swedish osar,..and was probably deposited as a delta formation at the receding mouth of a glacial river.
1957 J. K. Charlesworth Quaternary Era I. xxi. 420 Osar..are tortuous or gently sinuous ridges.
1999 Géographie Physique et Quaternaire 53 12/1 This may have been the first suggestion that eskers exist in the White Mountains, although he stopped short of saying that the Giant's Grave was indeed an osar.
This entry has been updated (OED Third Edition, September 2004; most recently modified version published online March 2022).
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n.1842
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