rhombohedronn.

Brit.

/ˌrɒmbəˈhiːdrən/, U.S.

/ˌrɑmboʊˈhidrən/,

/ˌrɑmboʊˈhiˌdrɑn/

Inflections: Plural rhombohedra, rhombohedrons.

Forms: 1800s rhomboedron, 1800s– rhombohedron.

Origin: Formed within English, by compounding; perhaps modelled on a French lexical item. Etymons: rhombo- comb. form, -hedron comb. form.

Etymology: < rhombo- comb. form + -hedron comb. form, perhaps after French rhomboèdre (Haüy, 1784). Compare rhombohedral adj.

A solid figure or object having six equal rhombic faces; (Mineralogy) a crystal having this form.

ΘΚΠ

the world > matter > chemistry > crystallography (general) > crystal (general) > specific crystal forms > [noun] > rhombohedron

rhomb1685

rhomboid1753

rhombohedron1814

1814 Synopsis Contents Brit. Mus. (ed. 7) 31 Among these the most common..is the inverse rhombohedron.

1850 C. G. B. Daubeny Introd. Atomic Theory (ed. 2) vi. 171 The metals arsenic and antimony both crystallizing in the form of an acute rhomboedron.

1880 J. W. Legg On Bile 11 Glycocoll forms large rhombohedra which are easily soluble in water.

1913 A. W. Grabau Princ. Stratigr. ix. 336 The chemical part of the cements consists of microscopic calcite rhombohedrons and less regular calcite grains.

1962 Mineral. Mag. 33 285 Florencite occurs at Kangankunde as pink rhombohedra about 0·01 cm long.

2001 Evening Standard (Nexis) 22 Jan. 61 A single, perfect rhombohedron of scarlet rhodochrosite.

This entry has been updated (OED Third Edition, June 2010; most recently modified version published online March 2022).

单词	rhombohedron
释义	rhombohedronn. Brit. /ˌrɒmbəˈhiːdrən/, U.S. /ˌrɑmboʊˈhidrən/, /ˌrɑmboʊˈhiˌdrɑn/ Inflections: Plural rhombohedra, rhombohedrons. Forms: 1800s rhomboedron, 1800s– rhombohedron. Origin: Formed within English, by compounding; perhaps modelled on a French lexical item. Etymons: rhombo- comb. form, -hedron comb. form. Etymology: < rhombo- comb. form + -hedron comb. form, perhaps after French rhomboèdre (Haüy, 1784). Compare rhombohedral adj. A solid figure or object having six equal rhombic faces; (Mineralogy) a crystal having this form. ΘΚΠ the world > matter > chemistry > crystallography (general) > crystal (general) > specific crystal forms > [noun] > rhombohedron rhomb1685 rhomboid1753 rhombohedron1814 1814 Synopsis Contents Brit. Mus. (ed. 7) 31 Among these the most common..is the inverse rhombohedron. 1850 C. G. B. Daubeny Introd. Atomic Theory (ed. 2) vi. 171 The metals arsenic and antimony both crystallizing in the form of an acute rhomboedron. 1880 J. W. Legg On Bile 11 Glycocoll forms large rhombohedra which are easily soluble in water. 1913 A. W. Grabau Princ. Stratigr. ix. 336 The chemical part of the cements consists of microscopic calcite rhombohedrons and less regular calcite grains. 1962 Mineral. Mag. 33 285 Florencite occurs at Kangankunde as pink rhombohedra about 0·01 cm long. 2001 Evening Standard (Nexis) 22 Jan. 61 A single, perfect rhombohedron of scarlet rhodochrosite. This entry has been updated (OED Third Edition, June 2010; most recently modified version published online March 2022). < n.1814
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