micropegmatiticadj.

Brit.

/ˌmʌɪkrə(ʊ)pɛɡməˈtɪtɪk/, U.S.

/ˈˌmaɪkroʊˌpɛɡməˈtɪdɪk/

Origin: Formed within English, by compounding; probably modelled on a French lexical item. Etymons: micro- comb. form, pegmatitic adj.

Etymology: < micro- comb. form + pegmatitic adj., probably after French micro-pegmatite micropegmatite n. Compare slightly later micropegmatite n.

Geology.

Designating or relating to a microscopic or very fine pegmatitic rock structure; = micrographic adj.² 1.

ΚΠ

1885 A. Geikie Text-bk. Geol. (ed. 2) 110 The structure is..micropegmatitic where the help of a microscope is needed.

1886 Amer. Naturalist 20 161 A groundmass of small brown plates of biotite and clear orthoclase and quartz in micropegmatitic growths.

1896 Nat. Sci. Aug. 86 The garnet often streams out..forming micropegmatitic intergrowths with other materials.

1937 Proc. Geologists' Assoc. 48 275 The quartz-felspar intergrowths of the rheomorphic veins are less perfectly micropegmatitic.

1981 Rep. Inst. Geol. Sciences 81 iv. 1/1 The main sill consists of..micropegmatitic intergrowths of quartz and alkali feldspar [etc.].

This entry has been updated (OED Third Edition, December 2001; most recently modified version published online March 2022).

单词	micropegmatitic
释义	micropegmatiticadj. Brit. /ˌmʌɪkrə(ʊ)pɛɡməˈtɪtɪk/, U.S. /ˈˌmaɪkroʊˌpɛɡməˈtɪdɪk/ Origin: Formed within English, by compounding; probably modelled on a French lexical item. Etymons: micro- comb. form, pegmatitic adj. Etymology: < micro- comb. form + pegmatitic adj., probably after French micro-pegmatite micropegmatite n. Compare slightly later micropegmatite n. Geology. Designating or relating to a microscopic or very fine pegmatitic rock structure; = micrographic adj.² 1. ΚΠ 1885 A. Geikie Text-bk. Geol. (ed. 2) 110 The structure is..micropegmatitic where the help of a microscope is needed. 1886 Amer. Naturalist 20 161 A groundmass of small brown plates of biotite and clear orthoclase and quartz in micropegmatitic growths. 1896 Nat. Sci. Aug. 86 The garnet often streams out..forming micropegmatitic intergrowths with other materials. 1937 Proc. Geologists' Assoc. 48 275 The quartz-felspar intergrowths of the rheomorphic veins are less perfectly micropegmatitic. 1981 Rep. Inst. Geol. Sciences 81 iv. 1/1 The main sill consists of..micropegmatitic intergrowths of quartz and alkali feldspar [etc.]. This entry has been updated (OED Third Edition, December 2001; most recently modified version published online March 2022). < adj.1885
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