allotriomorphicadj.

Brit.

/əˌlɒtrɪəˈmɔːfɪk/,

/ˌalətrɪəˈmɔːfɪk/, U.S.

/əˌlɑtriəˈmɔrfɪk/,

/æˌlɑtriəˈmɔrfɪk/,

/ˌælətriəˈmɔrfɪk/

Origin: A borrowing from Greek, combined with an English element; modelled on a German lexical item. Etymons: Greek ἀλλότριος , -morphic comb. form.

Etymology: < ancient Greek ἀλλότριος belonging to another (see below) + -morphic comb. form, after German allotriomorph ( H. Rosenbusch Mikrosk. Physiogr. der massigen Gesteine (1886) i. 11).Ancient Greek ἀλλότριος is < ἄλλος other (see allo- comb. form) + an ablaut variant (zero-grade) of -τερος , comparative suffix (see other adj.) + -ιος, suffix forming adjectives.

Mineralogy.

= xenomorphic adj. at xeno- comb. form . Contrasted with idiomorphic adj. Cf. anhedral adj.

ΘΚΠ

the world > the earth > minerals > mineral structure or appearance > [adjective] > crystalline > crystal structure

monostic1816

pantogenous1816

isomorphous1828

polymorphous1848

monostichous1857

isomorphic1862

untwinned1879

allotriomorphic1887

xenomorphic1888

polymorphic1891

isostructural1906

isotypic1929

1887 Geol. Mag. Mar. 123 The form of an individual mineral in a rock may..be..dependent on causes other than the molecular forces proper to the mineral (allotriomorphic).

1922 C. H. Desch Metallogr. (ed. 3) ix. 179 Each grain [of metal] is, to use the mineralogical term, an ‘allotriomorphic’ crystal, the outline of which is determined by the presence of neighbouring grains.

1972 R. Galopin & N. F. M. Henry Microsc. Study Opaque Minerals v. 107/1 Minerals most commonly allotriomorphic include Sphalerite, Galena, Fahlerz, Bournonite, Chalcocite, Stannite, Chalcopyrite, Niccolite and Smaltite.

2000 Jrnl. Geol. (Chicago) 108 457/2 The leucogranites show allotriomorphic texture and rare crystals of biotite.

Derivatives

aˌllotrioˈmorphically adv. now rare.

ΚΠ

1888 Amer. Naturalist 22 209 When none of the constituents are..[idiomorphically] developed the structure is allotriomorphically granular.

1911 Ann. N.Y. Acad. Sci. 21 4 The quartz occurs allotriomorphically and also as small elongated prisms included in the feldspars.

1971 W. Uytenbogaardt & E. A. J. Burke Tables Microsc. Identification Ore Minerals (rev. ed.) 84 May occur idiomorphically (with prismatic, square, or rhombic sections) or allotriomorphically.

This entry has been updated (OED Third Edition, September 2012; most recently modified version published online December 2021).

单词	allotriomorphic
释义	allotriomorphicadj. Brit. /əˌlɒtrɪəˈmɔːfɪk/, /ˌalətrɪəˈmɔːfɪk/, U.S. /əˌlɑtriəˈmɔrfɪk/, /æˌlɑtriəˈmɔrfɪk/, /ˌælətriəˈmɔrfɪk/ Origin: A borrowing from Greek, combined with an English element; modelled on a German lexical item. Etymons: Greek ἀλλότριος , -morphic comb. form. Etymology: < ancient Greek ἀλλότριος belonging to another (see below) + -morphic comb. form, after German allotriomorph ( H. Rosenbusch Mikrosk. Physiogr. der massigen Gesteine (1886) i. 11).Ancient Greek ἀλλότριος is < ἄλλος other (see allo- comb. form) + an ablaut variant (zero-grade) of -τερος , comparative suffix (see other adj.) + -ιος, suffix forming adjectives. Mineralogy. = xenomorphic adj. at xeno- comb. form . Contrasted with idiomorphic adj. Cf. anhedral adj. ΘΚΠ the world > the earth > minerals > mineral structure or appearance > [adjective] > crystalline > crystal structure monostic1816 pantogenous1816 isomorphous1828 polymorphous1848 monostichous1857 isomorphic1862 untwinned1879 allotriomorphic1887 xenomorphic1888 polymorphic1891 isostructural1906 isotypic1929 1887 Geol. Mag. Mar. 123 The form of an individual mineral in a rock may..be..dependent on causes other than the molecular forces proper to the mineral (allotriomorphic). 1922 C. H. Desch Metallogr. (ed. 3) ix. 179 Each grain [of metal] is, to use the mineralogical term, an ‘allotriomorphic’ crystal, the outline of which is determined by the presence of neighbouring grains. 1972 R. Galopin & N. F. M. Henry Microsc. Study Opaque Minerals v. 107/1 Minerals most commonly allotriomorphic include Sphalerite, Galena, Fahlerz, Bournonite, Chalcocite, Stannite, Chalcopyrite, Niccolite and Smaltite. 2000 Jrnl. Geol. (Chicago) 108 457/2 The leucogranites show allotriomorphic texture and rare crystals of biotite. Derivatives aˌllotrioˈmorphically adv. now rare. ΚΠ 1888 Amer. Naturalist 22 209 When none of the constituents are..[idiomorphically] developed the structure is allotriomorphically granular. 1911 Ann. N.Y. Acad. Sci. 21 4 The quartz occurs allotriomorphically and also as small elongated prisms included in the feldspars. 1971 W. Uytenbogaardt & E. A. J. Burke Tables Microsc. Identification Ore Minerals (rev. ed.) 84 May occur idiomorphically (with prismatic, square, or rhombic sections) or allotriomorphically. This entry has been updated (OED Third Edition, September 2012; most recently modified version published online December 2021). < adj.1887
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