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Webster 1913 Edition

Noun.

[Gr.[GREEK] abundant, rich; cf. F.

é

onaste

(Min.)

A black variety of spinel.

Noun.

[Gr. abundant; from its four facets, sometimes found on each solid angle of the octahedron.]

A mineral, commonly considered as a variety of the spinelle ruby. [See Ceylonite.]

See also: pléonaste

pleonaste ‎(plural pleonastes)