basalt

Từ điển Oxford Learners Wordfinder Dictionary

noun

the commonest type of solidified lava;
a dense dark grey fine-grained igneous rock that is composed chiefly of plagioclase feldspar and pyroxene
• Derivationally related forms:
basaltic
• Hypernyms:
volcanic rock
• Substance Meronyms:
pyroxene, plagioclase, oligoclase