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English word
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WORDNET DICTIONARY
CIDE DICTIONARY
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WORDNET DICTIONARY
Noun peridotite has 1 sense
- peridotite(n = noun.substance) - a dark coarse-grained igneous rock consisting principally of olivine; is a kind of igneous rock
has particulars: kimberlite
CIDE DICTIONARY
peridotite, n. [Cf. F. péridotite.].
An eruptive rock characterized by the presence of chrysolite (peridot). It also usually contains pyroxene, enstatite, chromite, etc. It is often altered to serpentine. [1913 Webster]
" The chief diamond deposits in South Africa occur in a more or less altered peridotite."
[1913 Webster]