quartzoid
/ˈkwɔːtsɔɪd/Mineralogy
noun
A crystal having the form of two six-sided pyramids united by their bases.
Origin
Mid 19th century; earliest use found in James Dana (1813–1895), geologist, zoologist, and teacher. From quartz + -oid, after German Quartzoid.
- irremovably
- irreparability
- irreparable
- irreparableness
- irreparably
- irreplaceable
- irreplaceably
- irrepressibility
- irrepressible
- irrepressibleness
- irrepressibly
- irreproachability
- irreproachable
- irreproachableness
- irreproachably
- irreproducible
- irresistibility
- irresistible
- irresistibleness
- irresistibly
- irresoluble
- irresolute
- irresolutely
- irresoluteness
- irresolution