Source : Webster's Revised Unabridged Dictionary (1913)

Massive \Mass"ive\, a. [F. massif.]
   1. Forming, or consisting of, a large mass; compacted;
      weighty; heavy; massy. ``Massive armor.'' --Dr. H. More.

   2. (Min.) In mass; not necessarily without a crystalline
      structure, but having no regular form; as, a mineral
      occurs massive.

   {Massive rock} (Geol.), a compact crystalline rock not
      distinctly schistone, as granite; also, with some authors,
      an eruptive rock.