GRE Word List

OBSIDIAN

a dark natural glass formed by the cooling of molten lava

The meaning of the word obsidian is a dark natural glass formed by the cooling of molten lava.

Random words

WordMeaning
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supererogatoryobserved or performed to an extent not enjoined or required
ciliatedpossessing cilia
vergebrink
panachean ornamental tuft (as of feathers) especially on a helmet