anorthic

/ ænˈɔːθɪk /

adjective

1. another word for triclinic

Word History and Origins

Origin of anorthic¹

C19: from _an- + _ortho- + _-ic

Example Sentences

CYANITE, a native aluminium silicate, Al2SiO5, crystallizing in the anorthic system.

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In anorthic crystals there is no relation between the optical and crystallographic directions, and the exact determination of the optical orientation is often a matter of considerable difficulty.

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Although the crystals of all felspars present a general resemblance in habit, they are usually regarded as belonging to two systems, some felspars being monoclinic and others anorthic.

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It is a calcium and aluminium silicate, CaAl2Si2O3, and crystallizes in the anorthic system.

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In the sixth and last system, the triclinic—or anorthic, or asymmetric—the axes are again three, but in this case, none of them are equal and none at right angles.

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