| 单词 | calcedony |
| 释义 | calcedony (once / 231752 pages) n WORD FAMILY calcedony: calcedonies USAGE EXAMPLESThat peculiar kind of glass usually called schmelz, an imperfect imitation of calcedony, was also made at Venice in the 15th century. Various, Encyclopaedia Britannica, 11th Edit...(2012) These concretions have a straight cleavage in the direction of their short axis, and are often coated by fibrous calc-sinter and calcedony. Franklin, John, Narrative of a Second Expedition to...(2010) In many of them, "quartz, calcedony, red ochre, gypsum, and salts are found." Bullitt, Alexander Clark, Rambles in the Mammoth Cave, during...(2010) n a milky or greyish translucent to transparent quartz Syn|Hypo|Hyper chalcedony agate an impure form of quartz consisting of banded chalcedony; used as a gemstone and for making mortars and pestles bloodstone, heliotropegreen chalcedony with red spots that resemble blood carnelian, corneliana translucent red or orange variety of chalcedony chrysoprasea green variety of chalcedony valued as a gemstone onyxa chalcedony with alternating black and white bands; used in making cameos plasmaa green slightly translucent variety of chalcedony used as a gemstone sard, sardine, sardiusa deep orange-red variety of chalcedony moss agatean agate resembling moss with brown, black, or green markings sardonyxan onyx characterized by parallel layers of sard and a different colored mineral quartz a hard glossy mineral consisting of silicon dioxide in crystal form; present in most rocks (especially sandstone and granite); yellow sand is quartz with iron oxide impurities transparent gema gemstone having the property of transmitting light without serious diffusion |
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