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 schistose, as granite; also, with some authors, an eruptive rock.