'Pleonaste' definitions:
Definition of 'pleonaste'
(from WordNet)
noun
A dark-colored spinel containing iron [syn: Ceylonite, pleonaste]
Definition of 'Pleonaste'
From: GCIDE
- Pleonaste \Ple"o*naste\, n. [Gr.? abundant, rich; cf. F. pl['e]onaste.] (Min.) A black variety of spinel. [1913 Webster] Pleonastic
Definition of 'pleonaste'
From: GCIDE
- Ceylanite \Cey"lan*ite\, n. [F., fr. Ceylan Ceylon.] (Min.) A dingy blue, or grayish black, variety of spinel. It is also called pleonaste. [Written also ceylonite.] [1913 Webster]