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单词 pyrophysalite
释义

> as lemmas

pyrophysalite
pyrophysalite n.
Brit. /ˌpʌɪrə(ʊ)ˈfɪsəlʌɪt/
,
U.S. /ˌpaɪroʊˈfɪsəˌlaɪt/
[ < pyro- comb. form + Hellenistic Greek ϕυσαλλίς bladder, bubble (see Physalis n.) + -ite suffix1, after Swedish pyrophysalit (W. Hisinger and J. J. Berzelius 1806, in Afhandlingar i fysik, kemi och mineralogi 1 111)] Mineralogy a coarse, nearly opaque variety of topaz, occurring as large yellowish crystals which swell up when heated.
ΚΠ
1808 Jrnl. Nat. Philos. Jan. 33 Mineralogical Description..of a Stone, called Pyrophysalite.
1883 Encycl. Brit. XVI. 408/2 Pyrophysalite is a massive opaque cleavable variety [of topaz] from Falun.
2000 Geol. Today 16 198/1 Pyrophysalite occurs in large yellowish-white crystals from Finbo in Sweden. It has the property of intumescing when heated.
extracted from pyro-comb. form
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