Definition of elvan in English:
elvan
noun
GeologyHard intrusive igneous rock found in Cornwall, England, typically quartz porphyry.
‘Less frequently elvan has been met with in apparently isolated masses.’- ‘Molybdenite and corundum are also found in the schist through which the elvan dykes have cut.’
Pronunciation
Origin
Early 18th century perhaps via Cornish from Welsh elfen ‘element’.
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