diabasicadj.

Brit.

/dʌɪəˈbeɪsɪk/, U.S.

/ˌdaɪəˈbeɪsɪk/

Origin: Formed within English, by derivation. Etymons: diabase n., -ic suffix.

Etymology: < diabase n. + -ic suffix. Compare German diabasisch (1864 or earlier).In diabasic porphyry in quot. 1854 after German Diabasporphyr (1853 in the paper reviewed, or earlier).

Geology.

Of, relating to, or of the nature of diabase.

ΚΠ

1854 Q. Jrnl. Geol. Soc. 10 ii. 27 Diabasic porphyry, melaphyre, and breccias; amygdaloid, dolerite, and basalt.

1884 Science 20 June 763/1 Limestones, well proved to be of carboniferous age, cut by diabasic eruptives.

1940 F. F. Grout Kemp's Handbk. Rocks (ed. 6) v. 92 The diabasic or ophitic fabric in basalts is recognized by the mottling, shown by augite cleavages..on fresh surfaces, and by a color mottling after weathering.

2003 Abstr. with Programs (Geol. Soc. Amer.) 35 iv. 4 Such rock unit is intruded by Quaternary diabasic dikes.

This entry has been updated (OED Third Edition, June 2016; most recently modified version published online March 2022).

单词	diabasic
释义	diabasicadj. Brit. /dʌɪəˈbeɪsɪk/, U.S. /ˌdaɪəˈbeɪsɪk/ Origin: Formed within English, by derivation. Etymons: diabase n., -ic suffix. Etymology: < diabase n. + -ic suffix. Compare German diabasisch (1864 or earlier).In diabasic porphyry in quot. 1854 after German Diabasporphyr (1853 in the paper reviewed, or earlier). Geology. Of, relating to, or of the nature of diabase. ΚΠ 1854 Q. Jrnl. Geol. Soc. 10 ii. 27 Diabasic porphyry, melaphyre, and breccias; amygdaloid, dolerite, and basalt. 1884 Science 20 June 763/1 Limestones, well proved to be of carboniferous age, cut by diabasic eruptives. 1940 F. F. Grout Kemp's Handbk. Rocks (ed. 6) v. 92 The diabasic or ophitic fabric in basalts is recognized by the mottling, shown by augite cleavages..on fresh surfaces, and by a color mottling after weathering. 2003 Abstr. with Programs (Geol. Soc. Amer.) 35 iv. 4 Such rock unit is intruded by Quaternary diabasic dikes. This entry has been updated (OED Third Edition, June 2016; most recently modified version published online March 2022). < adj.1854
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