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macroprism
macroprism n.
Brit. 
/ˈmakrə(ʊ)ˌprɪz(ə)m/
, /ˈmakrə(ʊ)ˌprɪz(ə)m/U.S. /ˈmækroʊˌprɪz(ə)m/
Crystallography a prism of an orthorhombic crystal between the macropinacoid and the unit prism./ˈmækroʊˌprɪz(ə)m/ΘΚΠ
the world > matter > chemistry > crystallography (general) > crystal (general) > specific crystal forms > [noun]
tripyramid1828
trisoctahedron1837
fluoroid1850
sphenoid1855
discalenohedron1872
prism1878
tetrakis-hexahedron1878
galenoid1882
macroprism1883
semi-form1895
tetartohedron1895
tetrakisdodecahedron1895
trichite1900
1883 Encycl. Brit. XVI. 360/2 On the one side originate numerous macroprisms.
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