peridotite

== English == === Etymology === From peridot + -ite. === Pronunciation === (UK) IPA(key): /ˈpɛɹ.ɪ.dəˌtaɪt/ (US) IPA(key): /pəˈɹɪd.əˌtaɪt/, /ˈpɛɹ.ɪ.doʊˌtaɪt/ === Noun === peridotite (countable and uncountable, plural peridotites) (geology) A rock consisting of small crystals of olivine, pyroxene and hornblende; the major constituent of the Earth's mantle. ==== Derived terms ==== ==== Translations ====