per·i·do·tite (p r  -d -t t , p -rd-)n. Any of a group of igneous rocks composed mainly of olivine and various pyroxenes and having a granitelike texture. |
peridotite [ˌpɛrɪˈdəʊtaɪt]
n
(Earth Sciences / Minerals) a dark coarse-grained ultrabasic plutonic igneous rock consisting principally of olivine
[from French, from peridot]
peridotitic [ˌpɛrɪdəʊˈtɪtɪk] adj
| peridotite (pr-d-tt, p-rd-) A coarse-grained igneous rock that consists mainly of olivine and pyroxene. It is believed to be one of the main constituent rocks of the Earth's mantle. |
ThesaurusLegend: Synonyms Related Words Antonyms
| Noun | 1. | peridotite - a dark coarse-grained igneous rock consisting principally of olivine igneous rock - rock formed by the solidification of molten magma kimberlite - a rare type of peridotite that sometimes contains diamonds; found in South Africa and Siberia |
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