ooidn.

Brit.

/ˈəʊɔɪd/, U.S.

/ˈoʊˌɔɪd/

Forms: 1900s– ooid, 1900s– oöid.

Origin: A borrowing from German. Etymon: German Ooid.

Etymology: < German Ooid (E. Kalkowsky 1908, in Zeitschr. f. Deutsch. Geol. Ges. 60 72) < ancient Greek ᾠοειδής egg-shaped < ᾠο- oo- comb. form + -οειδής -oid suffix. Compare earlier ovoid n.

Geology.

= oolith n.

ΘΚΠ

the world > the earth > structure of the earth > constituent materials > rock > sedimentary rock > [noun] > limestone > oolite > oolith

oolith1788

ovulite1847

oolite1851

ooid1918

1918 Jrnl. Geol. (Chicago) 26 593 For an individual grain of an oölite the term ‘ovulite’.. appears to be preferable to Kalkowsky's ‘oöid’.

1942 Proc. National Acad. Sci. U.S.A. 28 402 Rock flowage..includes rearrangement of minerals.., formation of flow cleavage.., elongation of components like ooids, pebbles, fossils or amygdules.

1974 Nature 15 Feb. 452/1 The formation is mainly dolomitic... It contains desiccation cracks,..oöids and algal stromatolites.

1991 Sea Frontiers Feb. 38 (caption) Brightly colored minerals such as olivine, the concentric rings of ooids, and brown peloids..are clearly revealed when polarized light is shined through a superthin slice of rock.

This entry has been updated (OED Third Edition, June 2004; most recently modified version published online March 2022).

单词	ooid
释义	ooidn. Brit. /ˈəʊɔɪd/, U.S. /ˈoʊˌɔɪd/ Forms: 1900s– ooid, 1900s– oöid. Origin: A borrowing from German. Etymon: German Ooid. Etymology: < German Ooid (E. Kalkowsky 1908, in Zeitschr. f. Deutsch. Geol. Ges. 60 72) < ancient Greek ᾠοειδής egg-shaped < ᾠο- oo- comb. form + -οειδής -oid suffix. Compare earlier ovoid n. Geology. = oolith n. ΘΚΠ the world > the earth > structure of the earth > constituent materials > rock > sedimentary rock > [noun] > limestone > oolite > oolith oolith1788 ovulite1847 oolite1851 ooid1918 1918 Jrnl. Geol. (Chicago) 26 593 For an individual grain of an oölite the term ‘ovulite’.. appears to be preferable to Kalkowsky's ‘oöid’. 1942 Proc. National Acad. Sci. U.S.A. 28 402 Rock flowage..includes rearrangement of minerals.., formation of flow cleavage.., elongation of components like ooids, pebbles, fossils or amygdules. 1974 Nature 15 Feb. 452/1 The formation is mainly dolomitic... It contains desiccation cracks,..oöids and algal stromatolites. 1991 Sea Frontiers Feb. 38 (caption) Brightly colored minerals such as olivine, the concentric rings of ooids, and brown peloids..are clearly revealed when polarized light is shined through a superthin slice of rock. This entry has been updated (OED Third Edition, June 2004; most recently modified version published online March 2022). < n.1918
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