D defs.my
Entry 1 sense Webster, 1913

pyroxylin

· py·rox·y·lin · IPA
01 n. A substance resembling gun cotton in composition and properties, but distinct in that it is more highly nitrified and is soluble in alcohol…
  1. 1.
    A substance resembling gun cotton in composition and properties, but distinct in that it is more highly nitrified and is soluble in alcohol, ether, etc.; -- called also pyroxyle.(Chem.) Also: pyroxyle