si·ma (s  m )n. The lower layer of the earth's outer crust that underlies the sial and is rich in silica, iron, and magnesium. [si(lica) + ma(gnesium).] |
sima [ˈsaɪmə]
n
1. (Earth Sciences / Geological Science) the silicon-rich and magnesium-rich rocks of the earth's oceanic crust, the most abundant individual rock being basalt
2. (Earth Sciences / Geological Science) the earth's continental lower crust, probably comprised of gabbro rather than basalt
[from si(lica) + ma(gnesia)]
simatic [saɪˈmætɪk] adj
ThesaurusLegend: Synonyms Related Words Antonyms
| Noun | 1. |  sima - rock that form the continuous lower layer of the earth's crust; rich in silicon and magnesiumcrust, Earth's crust - the outer layer of the Earth |
Translations
sima [ˈsaɪmə] n (Geol) → sima m
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