Definition of "felspar" [fel•spar]

• Variant of feldspar. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "From what has been said regarding the richness in potash of certain commonly occurring minerals, such as felspar, it is only natural to infer that most soils must contain large quantities of this substance; and this is so."
• "Among the mineral productions is a kind of felspar, which, when polished, exhibits a display of brilliant and beautiful colours."
• "Three barges, smothered in floury dust, were being unloaded of their cargoes of powdered felspar by a multitude of coughing men, each guiding a little truck; the dust filled the place with a choking mist, and turned the electric glare yellow."