fire sand


Definition of fire sand

  1. 1 :  a highly refractory sand that consists mainly of coarse quartz grains with alumina or clayey sand and that is used especially for foundry purposes

  2. 2 :  a grayish green powder or granular refractory material obtained as a by-product in the manufacture of silicon carbide

Love words? You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Join MWU now and get access to America’s largest dictionary, with:

  • 300,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

Seen and Heard

What made you want to look up fire sand? Please tell us where you read or heard it (including the quote, if possible).


a trip made at another's expense

Get Word of the Day daily email!