geoden.

Brit.

/ˈdʒiːəʊd/, U.S.

/ˈdʒiˌoʊd/

Forms:

α. 1600s–1700s geodes.

β. 1600s– geode, 1700s–1800s geod.

γ. 1800s– geoid (now rare).

Origin: Of multiple origins. Partly a borrowing from French. Partly a borrowing from Latin. Etymons: French géode; Latin geōdēs.

Etymology: < (i) French géode (1752 denoting the rock body; the use with reference to the cavity itself is apparently not paralleled until later: 1847 or earlier; earlier as †géodes (1556 in Middle French, obsolete after 1759)), and its etymon (ii) classical Latin geōdēs, kind of precious stone (Pliny) < ancient Greek γεώδης earthy < γῆ earth (see geo- comb. form) + -ώδης -ode comb. form¹. Compare Spanish geode (1569), Italian geode (1563).In α. forms directly < classical Latin geōdēs. In γ. forms (e.g. in quot. 1845) with alteration of the ending by association with -oid suffix.

Geology.

A rock body or nodule having an internal cavity lined or filled with mineral crystals growing inwards; esp. a hollow, rounded stone containing large or well-formed crystals and typically cut in half for display. Also: the cavity within such a body; the contents of such a cavity. Also in figurative contexts.

ΘΚΠ

the world > the earth > structure of the earth > constituent materials > stone > a stone > [noun] > concretionary or nodular > geode

geode1623

geodite1802

potato stone1824

thunder egg1951

the world > the earth > structure of the earth > constituent materials > stone > a stone > [noun] > concretionary or nodular > cavity in nodular stone

geode1816

tick-hole1829

1623 H. Cockeram Eng. Dict. Geodes, a stone being hollow, hauing earth within the hollownesse thereof, and being put to a man's eare, it maketh a kinde of sound.

1646 Sir T. Browne Pseudodoxia Epidemica ii. v. §9 Many sorts there are of this ratling Stone, beside the Geodes .

1676 E. Coles Eng. Dict. Geode, the Earth-stone.

1774 Philos. Trans. (Royal Soc.) 65 41 A hard ferruginous substance, of a dark-brown colour, much resembling some common ferruginous geodes I have seen.

1811 J. Pinkerton Petralogy I. 436 Infiltrated geods of quartz and calcareous spar.

1816 P. Cleaveland Elem. Treat. Mineral. & Geol. iv. 177 Marly Geodes. These are cavities of various forms, whose interior is often garnished with crystals of carbonate of lime.

1845 P. J. Bailey Festus (ed. 2) 266 And even when their looks are earthy, still If opened, like geoids, they may be found Full of all sparkling sparry loveliness.

1849 J. D. Dana U.S. Exploring Exped.: Geol. (1850) iv. 298 Small geodes of stilbite and analcime were found in pebbles.

1860 O. W. Holmes Professor at Breakfast-table iii. 71 An aphorism..has been forming itself in one of the blank interior spaces of my intelligence, like a crystal in the cavity of a geode.

1883 L. Oliphant Haifa (1887) 37 A plateau..abundantly strewn with geodes.

1929 G. P. Merrill Minerals from Earth & Sky ii. iv. 227 This district produced a single geode surpassing in size and elegance anything of the kind previously known.

1943 Sci. Monthly Jan. 47/1 Many of these agates contain geodes in the center with the quartz crystals pointing inward.

1982 Mining Ann. Rev. (Nexis) June 444 Other minerals of particular interest to Madagascar..include blue calcite, celestite (most beautiful crystals from geoids), fossilised wood [etc.].

2003 Scots Mag. Feb. 198/2 Because of all this incredible volcanic activity Mull is a veritable rattle bag of crystals, agates and geodes.

2008 Chicago Daily Herald (Nexis) 14 Mar. (Neighbor section) 1 Geodes, rock cavities with crystal formations on the inside, will be given away.

This entry has been updated (OED Third Edition, March 2012; most recently modified version published online March 2022).

单词	geode
释义	geoden. Brit. /ˈdʒiːəʊd/, U.S. /ˈdʒiˌoʊd/ Forms: α. 1600s–1700s geodes. β. 1600s– geode, 1700s–1800s geod. γ. 1800s– geoid (now rare). Origin: Of multiple origins. Partly a borrowing from French. Partly a borrowing from Latin. Etymons: French géode; Latin geōdēs. Etymology: < (i) French géode (1752 denoting the rock body; the use with reference to the cavity itself is apparently not paralleled until later: 1847 or earlier; earlier as †géodes (1556 in Middle French, obsolete after 1759)), and its etymon (ii) classical Latin geōdēs, kind of precious stone (Pliny) < ancient Greek γεώδης earthy < γῆ earth (see geo- comb. form) + -ώδης -ode comb. form¹. Compare Spanish geode (1569), Italian geode (1563).In α. forms directly < classical Latin geōdēs. In γ. forms (e.g. in quot. 1845) with alteration of the ending by association with -oid suffix. Geology. A rock body or nodule having an internal cavity lined or filled with mineral crystals growing inwards; esp. a hollow, rounded stone containing large or well-formed crystals and typically cut in half for display. Also: the cavity within such a body; the contents of such a cavity. Also in figurative contexts. ΘΚΠ the world > the earth > structure of the earth > constituent materials > stone > a stone > [noun] > concretionary or nodular > geode geode1623 geodite1802 potato stone1824 thunder egg1951 the world > the earth > structure of the earth > constituent materials > stone > a stone > [noun] > concretionary or nodular > cavity in nodular stone geode1816 tick-hole1829 1623 H. Cockeram Eng. Dict. Geodes, a stone being hollow, hauing earth within the hollownesse thereof, and being put to a man's eare, it maketh a kinde of sound. 1646 Sir T. Browne Pseudodoxia Epidemica ii. v. §9 Many sorts there are of this ratling Stone, beside the Geodes . View more context for this quotation 1676 E. Coles Eng. Dict. Geode, the Earth-stone. 1774 Philos. Trans. (Royal Soc.) 65 41 A hard ferruginous substance, of a dark-brown colour, much resembling some common ferruginous geodes I have seen. 1811 J. Pinkerton Petralogy I. 436 Infiltrated geods of quartz and calcareous spar. 1816 P. Cleaveland Elem. Treat. Mineral. & Geol. iv. 177 Marly Geodes. These are cavities of various forms, whose interior is often garnished with crystals of carbonate of lime. 1845 P. J. Bailey Festus (ed. 2) 266 And even when their looks are earthy, still If opened, like geoids, they may be found Full of all sparkling sparry loveliness. 1849 J. D. Dana U.S. Exploring Exped.: Geol. (1850) iv. 298 Small geodes of stilbite and analcime were found in pebbles. 1860 O. W. Holmes Professor at Breakfast-table iii. 71 An aphorism..has been forming itself in one of the blank interior spaces of my intelligence, like a crystal in the cavity of a geode. 1883 L. Oliphant Haifa (1887) 37 A plateau..abundantly strewn with geodes. 1929 G. P. Merrill Minerals from Earth & Sky ii. iv. 227 This district produced a single geode surpassing in size and elegance anything of the kind previously known. 1943 Sci. Monthly Jan. 47/1 Many of these agates contain geodes in the center with the quartz crystals pointing inward. 1982 Mining Ann. Rev. (Nexis) June 444 Other minerals of particular interest to Madagascar..include blue calcite, celestite (most beautiful crystals from geoids), fossilised wood [etc.]. 2003 Scots Mag. Feb. 198/2 Because of all this incredible volcanic activity Mull is a veritable rattle bag of crystals, agates and geodes. 2008 Chicago Daily Herald (Nexis) 14 Mar. (Neighbor section) 1 Geodes, rock cavities with crystal formations on the inside, will be given away. This entry has been updated (OED Third Edition, March 2012; most recently modified version published online March 2022). < n.1623
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