- (chemistry, dated) crude native borax, formerly imported from Tibet, and once the chief source of boric compounds
Part or all of this entry has been imported from the 1913 edition of Webster’s Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.
(See the entry for tincal in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.)
- “Tincal” in David Barthelmy, Webmineral Mineralogy Database, 1997–.
- “tincal”, in Mindat.org, Hudson Institute of Mineralogy, accessed 29 August 2016.