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The Collaborative International Dictionary
Astroite

Astroite \As"tro*ite\, n. [L. astroites: cf. F. astroite.] A radiated stone or fossil; star-stone. [Obs.] [Written also astrite and astrion.]

Wiktionary
astroite

n. (context obsolete English) A radiated stone or fossil; star-stone.