gabbro
/ˈgæbrəʊ/noun
(pl. -os)［mass noun］
- Geology a dark, coarse-grained plutonic rock of crystalline texture, consisting mainly of pyroxene, plagioclase feldspar, and often olivine【地质】辉长岩。
派生词
gabbroic
adjectivegabbroid
adjective词源
mid 19th cent.: from Italian, from Latin glaber， glabr- 'smooth'.