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   gab·bro

   /ˈɡaˌbrō/

   noun

   • 1. a dark, coarse-grained plutonic rock of crystalline texture, consisting mainly of pyroxene, plagioclase feldspar, and often olivine: "a house of gabbro"

   Word Origin late 18th century: from Italian, from Latin glaber, glabr- ‘smooth’.

   Derivatives

   • 1. gabbroic adjective
   • 2. gabbroid adjective

   Scrabble Points: 11

   • G

     2

   • A

     1

   • B

     3

   • B

     3

   • R

     1

   • O

     1

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