† pyrgomn.

Origin: A borrowing from German. Etymon: German Pyrgom.

Etymology: < German Pyrgom (A. Breithaupt 1816, in Taschenbuch f. die gesammte Mineral. 10 570) < ancient Greek πύργωμα fenced city ( < πυργοῦν to surround with towers, to fortify ( < πύργος tower: see pyrgologist n.) + -μα : see -oma comb. form), apparently so called on account of the grouping of its crystals. Compare earlier pyroxene n., fassaite n.Apparently originally coined by A. G. Werner, whose work Breithaupt was editing at the time of publication. N.E.D. (1909) gives the pronunciation as (pə̄·ɹǫm) /ˈpɜːɡɒm/.

Mineralogy. Obsolete. rare.

= fassaite n. b.

ΚΠ

1818 Ann. Philos. 12 312 Pyrgom.—By this name, Werner distinguishes the mineral found in the valley of Fassa, and to which the name of fassaïte had already been given by the Italian mineralogists. In its crystallization, its structure, and other essential characters, it perfectly agrees with augite (pyroxène of Haüy).

1868 J. D. Dana Syst. Mineral. (ed. 5) 216 Fassaite (or pyrgom). Includes the green kinds found in metamorphic rocks.

This entry has been updated (OED Third Edition, December 2007; most recently modified version published online March 2022).

单词	pyrgom
释义	† pyrgomn. Origin: A borrowing from German. Etymon: German Pyrgom. Etymology: < German Pyrgom (A. Breithaupt 1816, in Taschenbuch f. die gesammte Mineral. 10 570) < ancient Greek πύργωμα fenced city ( < πυργοῦν to surround with towers, to fortify ( < πύργος tower: see pyrgologist n.) + -μα : see -oma comb. form), apparently so called on account of the grouping of its crystals. Compare earlier pyroxene n., fassaite n.Apparently originally coined by A. G. Werner, whose work Breithaupt was editing at the time of publication. N.E.D. (1909) gives the pronunciation as (pə̄·ɹǫm) /ˈpɜːɡɒm/. Mineralogy. Obsolete. rare. = fassaite n. b. ΚΠ 1818 Ann. Philos. 12 312 Pyrgom.—By this name, Werner distinguishes the mineral found in the valley of Fassa, and to which the name of fassaïte had already been given by the Italian mineralogists. In its crystallization, its structure, and other essential characters, it perfectly agrees with augite (pyroxène of Haüy). 1868 J. D. Dana Syst. Mineral. (ed. 5) 216 Fassaite (or pyrgom). Includes the green kinds found in metamorphic rocks. This entry has been updated (OED Third Edition, December 2007; most recently modified version published online March 2022). < n.1818
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