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
repressto check by or as if by pressure : curb
toppleto fall from or as if from being top-heavy
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decantto draw off (a liquid) without disturbing the sediment or the lower liquid layers
shiftto exchange for or replace by another : change
magisterialof, relating to, or having the characteristics of a master or teacher : authoritative
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imploreto make an earnest request to (someone) : beg
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speechlessunable to speak : dumb