gabbro

From Italian gabbro.

• (UK) IPA^(key): /ˈɡabɹəʊ/

gabbro (countable and uncountable, plural gabbros)

1. (petrology) Originally, a kind of serpentine; now generally a coarsely crystalline, igneous rock consisting of lamellar pyroxene and labradorite.
   • 2004, Richard Fortey, The Earth, Folio Society 2011, p. 59:

     It is known as gabbro and is thought to form the lower layer of the oceanic crust at about four kilometres depth and to comprise a layer up to six kilometres thick, making it one of the most abundant, if least recognisable, materials on earth.

• gabbroid
• gabbroic
• leucogabbro
• melagabbro
• microgabbro