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
| Word | Meaning |
|---|---|
| quack | to make the characteristic cry of a duck |
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| acumen | keenness and depth of perception, discernment, or discrimination especially in practical matters |
| mortify | to subject to severe and vexing embarrassment : shame |
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| collusion | secret agreement or cooperation especially for an illegal or deceitful purpose |
| luminous | emitting or reflecting usually steady, suffused, or glowing light |
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