phenocrystn.

Brit.

/ˈfiːnə(ʊ)krɪst/,

/ˈfɛnə(ʊ)krɪst/, U.S.

/ˈfinəˌkrɪst/,

/ˈfɛnəˌkrɪst/

Origin: Formed within English, by compounding. Etymons: pheno- comb. form, crystal n.

Etymology: < pheno- comb. form + cryst- (in crystal n.). N.E.D. (1906) derives the word from French phénocryste, but this has not been traced at so early a date.

Geology.

Any of the large or conspicuous crystals in a porphyritic rock, distinct from the groundmass.

ΘΚΠ

the world > the earth > structure of the earth > constituent materials > rock > texture or colour > [noun] > texture > having embedded crystals > crystalline substance in

mica1681

kernel1839

phenocryst1889

idioblast1920

porphyroblast1920

porphyroclast1932

poikiloblast1944

1889 J. P. Iddings in Bull. Philos. Soc. Washington 11 73 Phenocrysts would..be all those crystals in a porphyritic rock that stand out conspicuously from..the groundmass.

1893 A. Geikie Text-bk. Geol. (ed. 3) ii. 155 Two phases of consolidation..to be observed, the first (porphyritic) marked by the formation of large crystals (phenocrysts) which were often broken and corroded by mechanical and chemical action.

1903 Daily Chron. 7 Nov. 3/3 The pyroxene phenocrysts usually are represented by separate crystals of the monoclinic as well as the rhombic type.

1969 Daily Tel. 22 July 32/4 He likened some of the rocks [on the moon] to..basalt and said others had ‘phenocrysts’, or crystals embedded in a mass of finer material.

1994 Museum Internat. No. 183. 27/2 This statue is of porphyroid granite with pink potassium feldspar phenocrysts, a rock commonly used in Ancient Egyptian statuary.

This entry has been updated (OED Third Edition, December 2005; most recently modified version published online March 2022).

单词	phenocryst
释义	phenocrystn. Brit. /ˈfiːnə(ʊ)krɪst/, /ˈfɛnə(ʊ)krɪst/, U.S. /ˈfinəˌkrɪst/, /ˈfɛnəˌkrɪst/ Origin: Formed within English, by compounding. Etymons: pheno- comb. form, crystal n. Etymology: < pheno- comb. form + cryst- (in crystal n.). N.E.D. (1906) derives the word from French phénocryste, but this has not been traced at so early a date. Geology. Any of the large or conspicuous crystals in a porphyritic rock, distinct from the groundmass. ΘΚΠ the world > the earth > structure of the earth > constituent materials > rock > texture or colour > [noun] > texture > having embedded crystals > crystalline substance in mica1681 kernel1839 phenocryst1889 idioblast1920 porphyroblast1920 porphyroclast1932 poikiloblast1944 1889 J. P. Iddings in Bull. Philos. Soc. Washington 11 73 Phenocrysts would..be all those crystals in a porphyritic rock that stand out conspicuously from..the groundmass. 1893 A. Geikie Text-bk. Geol. (ed. 3) ii. 155 Two phases of consolidation..to be observed, the first (porphyritic) marked by the formation of large crystals (phenocrysts) which were often broken and corroded by mechanical and chemical action. 1903 Daily Chron. 7 Nov. 3/3 The pyroxene phenocrysts usually are represented by separate crystals of the monoclinic as well as the rhombic type. 1969 Daily Tel. 22 July 32/4 He likened some of the rocks [on the moon] to..basalt and said others had ‘phenocrysts’, or crystals embedded in a mass of finer material. 1994 Museum Internat. No. 183. 27/2 This statue is of porphyroid granite with pink potassium feldspar phenocrysts, a rock commonly used in Ancient Egyptian statuary. This entry has been updated (OED Third Edition, December 2005; most recently modified version published online March 2022). < n.1889
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