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Webster 1913 Edition

Noun.

Resembling sapphire; made of sapphire; having the color, or any quality of sapphire.

“Sapphirine degree of hardness.”

Boyle.

Adj.

Resembling sapphire; made of sapphire; having the qualities of sapphire.

sapphirine ‎(countable and uncountable, plural sapphirines)

(mineralogy) A rare silicate of magnesium and aluminium (with iron as a major impurity), named for its sapphirelike colour.

mineral

sapphirine ‎(comparative more sapphirine, superlative most sapphirine)

sapphīrine