D defs.my
Entry 1 sense Webster, 1913

Nitrum

· Ni·trum · IPA /ˈnaɪtɹəm/
01 n. Niter.
  1. 1.
    Niter.(Old Chem.)
Phrases & compounds
Nitrum flammans — ammonium nitrate; -- probably so called because it deflagrates when suddenly heated.