from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A usually coarse-grained igneous rock composed chiefly of calcic plagioclase and pyroxene. Also called norite.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A name originally given to a kind of serpentine, and now generally used for a coarsely crystalline, igneous rock consisting of lamellar pyroxene and labradorite.
from the GNU version of the Collaborative International Dictionary of English
- n. A name originally given by the Italians to a kind of serpentine, later to the rock called euphotide, and now generally used for a coarsely crystalline, igneous rock consisting of lamellar pyroxene (diallage) and labradorite, with sometimes chrysolite (olivine gabbro).
from The Century Dictionary and Cyclopedia
- n. A rock of varied lithological character, essentially, according to the present general acceptation of the name among lithologists, a crystalline-granular aggregate of plagioclase and diallage, with which often occur magnetite (or menachanite) and apatite.
- n. It is proposed, in the field classification of igneous rocks in connection with the quantitative system of classification (1902), to use the term gabbro for all granular igneous rocks with dominant pyroxene and subordinate feldspar of any kind, with or without hornblende and mica. Such rocks would include the less feldspathic gabbros and norites, and some diorites. See rock.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. one of a family of granular intrusive rocks
Italian, perhaps from Latin glaber, bald, beardless.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Italian gabbro. (Wiktionary)