negative crystal
noun
1 Optics a crystal in which the index of refraction is greater for the ordinary than the extraordinary ray.
2 Geology a cavity having the shape of a crystal within a mineral mass.
Origin
Mid 19th century; earliest use found in David Brewster (1781–1868), natural philosopher and academic administrator.
- liquidambar
- liquidate
- liquidation
- liquidator
- liquid crystal
- liquid crystal display
- liquid diet
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- liquidiser
- liquidity
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- liquidity ratio
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- liquid lunch
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- Liquid Paper
- liquid paraffin
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- camerlengho
- camerlengo
- camerlingho
- camerlingo