nitrocalcite

from Wiktionary, Creative Commons Attribution/Share-Alike License

• n. A hydrated calcium nitrate mineral that forms as an efflorescence where manure contacts concrete or limestone in a dry environment, as in stables or caverns.

from the GNU version of the Collaborative International Dictionary of English

• n. Nitrate of calcium, a substance having a grayish white color, occuring in efflorescences on old walls, and in limestone caves, especially where there exists decaying animal matter.

from The Century Dictionary and Cyclopedia

• n. Native nitrate of calcium.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• n. the mineral form of calcium nitrate