poikiliticadj.

Brit.

/ˌpɔɪkᵻˈlɪtɪk/, U.S.

/ˌpɔɪkəˈlɪdɪk/

Forms: 1800s– poecilitic Brit.

/piːsɪˈlɪtɪk/, U.S.

/ˌpɪsəˈlɪdɪk/, 1800s– poikilitic; 1800s poicilitic.

Origin: A borrowing from Greek, combined with an English element. Etymons: Greek ποικίλος , -itic suffix.

Etymology: < ancient Greek ποικίλος variegated (see poikilo- comb. form) + -itic suffix. In sense 1 after poecilite n.; compare French poecilien (see poecilite n.).

†1. Geology. Usually with capital initial. Designating or relating to the Permo-Triassic system, as being characterized by variegated rocks (esp. the New Red Sandstone). Obsolete.

ΘΚΠ

the world > the earth > structure of the earth > age or period > stratigraphic units > [adjective] > primary or Palaeozoic > Permian

poikilitic1832

Permian1841

Dyassic1878

Permic1914

the world > the earth > structure of the earth > age or period > stratigraphic units > [adjective] > secondary or Mesozoic > Triassic

poikilitic1832

Triassic1841

Rhaetic1861

Rhaetian1875

1832 W. D. Conybeare in Rep. Brit. Assoc. 379 The next geological group..beneath the lias and oolites, is that..characterized by the new red or variegated sandstone... I will venture therefore to propose the term Pœcilite..and hence denominate the group, pœcilitic. Brongniart has already adopted the Gallicised form Pœcilien.

1836 W. Buckland Geol. & Mineral. II. 38 The word Pœcilitic is in sound so like to Pisolite, that it may be better to adhere more literally to the Greek root ποικίλος, and apply the common name of Poikilitic group to the strata in question.

1846 H. T. De la Beche in Mem. Geol. Surv. Great Brit. I. 239 Poicilitic or New Red Sandstone Series.

1861 Englishwoman's Domest. Mag. 3 59 The reconstruction of the cretaceous, poikilitic, oolitic, or silurian landscape, peopled with revivified Batrachians.

1885 A. Geikie Text-bk. Geol. (ed. 2) 748 The term ‘Poikilitic’ was formerly proposed for them, on account of their characteristic mottled appearance.

1892 Iowa Citizen 9 Sept. 7/4 Geologists also conclude that the formation of the Laurentian, Cambrian and silurian strata occupied a period of about 200,000,000 years; the red sandstone, the carboniferous and the poecilitic systems another 200,000,000 years, [etc.].

2. Geology. Of the structure or texture of a rock (now only an igneous rock): containing small crystals of one mineral enclosed within crystals of another. Of a rock or mineral: displaying such a structure. Cf. poikiloblastic adj.

ΘΚΠ

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

ocellar1886

poikilitic1886

hyalopilitic1888

poikiloblastic1920

the world > the earth > structure of the earth > constituent materials > rock > texture or colour > [adjective] > texture > embedded crystals

ophitical1611

ophitic1870

poikilitic1886

hyalopilitic1888

miarolitic1889

hyalo-ophitic1920

poikiloblastic1920

porphyroblastic1920

porphyroclastic1920

1886 G. H. Williams in Amer. Jrnl. Sci. 131 30 This structure is so common in many massive rocks, especially in the more basic kinds, that I would venture to suggest the use of the term ‘poicilitic’ (derived from the Greek ποικίλος, mottled) for it.

1893 G. H. Williams in Jrnl. Geol. (Chicago) 1 177 This term was at first incorrectly spelled poicilitic and subsequently corrected by Prof. Dana to its Latin form, poecilitic... Its preferable orthography is, however, that given above [sc. poikilitic]. At the time it was proposed the writer was not familiar..with the designations..poecilitic and poikilitic, given successively..to the ‘New Red’ sandstone.

1909 F. P. Mennell Introd. Petrol. xii. 87 (caption) Poecilitic structure, in picrite, Belingwe, Rhodesia. (Olivine enclosed in enstatite).

1954 H. Williams et al. Petrogr. ii. 19 (caption) Poikilitic texture in hornblende peridotite, Odenwald, Germany.

1964 E. Pyddoke Scientist & Archaeology iv. 84 The hornblende probably represents poecilitic olivine.

1993 Jrnl. Petrol. 34 681 The fine-grained basaltic zones grade upwards, into medium-grained (> 1 mm) poikilitic, olivine gabbro with small-scale modal layering.

This entry has been updated (OED Third Edition, September 2006; most recently modified version published online March 2022).

单词	poikilitic
释义	poikiliticadj. Brit. /ˌpɔɪkᵻˈlɪtɪk/, U.S. /ˌpɔɪkəˈlɪdɪk/ Forms: 1800s– poecilitic Brit. /piːsɪˈlɪtɪk/, U.S. /ˌpɪsəˈlɪdɪk/, 1800s– poikilitic; 1800s poicilitic. Origin: A borrowing from Greek, combined with an English element. Etymons: Greek ποικίλος , -itic suffix. Etymology: < ancient Greek ποικίλος variegated (see poikilo- comb. form) + -itic suffix. In sense 1 after poecilite n.; compare French poecilien (see poecilite n.). †1. Geology. Usually with capital initial. Designating or relating to the Permo-Triassic system, as being characterized by variegated rocks (esp. the New Red Sandstone). Obsolete. ΘΚΠ the world > the earth > structure of the earth > age or period > stratigraphic units > [adjective] > primary or Palaeozoic > Permian poikilitic1832 Permian1841 Dyassic1878 Permic1914 the world > the earth > structure of the earth > age or period > stratigraphic units > [adjective] > secondary or Mesozoic > Triassic poikilitic1832 Triassic1841 Rhaetic1861 Rhaetian1875 1832 W. D. Conybeare in Rep. Brit. Assoc. 379 The next geological group..beneath the lias and oolites, is that..characterized by the new red or variegated sandstone... I will venture therefore to propose the term Pœcilite..and hence denominate the group, pœcilitic. Brongniart has already adopted the Gallicised form Pœcilien. 1836 W. Buckland Geol. & Mineral. II. 38 The word Pœcilitic is in sound so like to Pisolite, that it may be better to adhere more literally to the Greek root ποικίλος, and apply the common name of Poikilitic group to the strata in question. 1846 H. T. De la Beche in Mem. Geol. Surv. Great Brit. I. 239 Poicilitic or New Red Sandstone Series. 1861 Englishwoman's Domest. Mag. 3 59 The reconstruction of the cretaceous, poikilitic, oolitic, or silurian landscape, peopled with revivified Batrachians. 1885 A. Geikie Text-bk. Geol. (ed. 2) 748 The term ‘Poikilitic’ was formerly proposed for them, on account of their characteristic mottled appearance. 1892 Iowa Citizen 9 Sept. 7/4 Geologists also conclude that the formation of the Laurentian, Cambrian and silurian strata occupied a period of about 200,000,000 years; the red sandstone, the carboniferous and the poecilitic systems another 200,000,000 years, [etc.]. 2. Geology. Of the structure or texture of a rock (now only an igneous rock): containing small crystals of one mineral enclosed within crystals of another. Of a rock or mineral: displaying such a structure. Cf. poikiloblastic adj. ΘΚΠ the world > the earth > minerals > mineral structure or appearance > [adjective] > enclosure ocellar1886 poikilitic1886 hyalopilitic1888 poikiloblastic1920 the world > the earth > structure of the earth > constituent materials > rock > texture or colour > [adjective] > texture > embedded crystals ophitical1611 ophitic1870 poikilitic1886 hyalopilitic1888 miarolitic1889 hyalo-ophitic1920 poikiloblastic1920 porphyroblastic1920 porphyroclastic1920 1886 G. H. Williams in Amer. Jrnl. Sci. 131 30 This structure is so common in many massive rocks, especially in the more basic kinds, that I would venture to suggest the use of the term ‘poicilitic’ (derived from the Greek ποικίλος, mottled) for it. 1893 G. H. Williams in Jrnl. Geol. (Chicago) 1 177 This term was at first incorrectly spelled poicilitic and subsequently corrected by Prof. Dana to its Latin form, poecilitic... Its preferable orthography is, however, that given above [sc. poikilitic]. At the time it was proposed the writer was not familiar..with the designations..poecilitic and poikilitic, given successively..to the ‘New Red’ sandstone. 1909 F. P. Mennell Introd. Petrol. xii. 87 (caption) Poecilitic structure, in picrite, Belingwe, Rhodesia. (Olivine enclosed in enstatite). 1954 H. Williams et al. Petrogr. ii. 19 (caption) Poikilitic texture in hornblende peridotite, Odenwald, Germany. 1964 E. Pyddoke Scientist & Archaeology iv. 84 The hornblende probably represents poecilitic olivine. 1993 Jrnl. Petrol. 34 681 The fine-grained basaltic zones grade upwards, into medium-grained (> 1 mm) poikilitic, olivine gabbro with small-scale modal layering. This entry has been updated (OED Third Edition, September 2006; most recently modified version published online March 2022). < adj.1832
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