Webster dictionary was developed by Noah Webster in the beginning of 19th century. On this website, you can find definition for vast from the 1913 edition of Webster's Revised Unabridged Dictionary. Define vast using one of the most comprehensive free online dictionaries on the web.

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Part of Speech: noun
Results: 6
2. Vastness.
Part of Speech: superlative
2. Of great extent; very spacious or large; also, huge in bulk; immense; enormous; as, the vast ocean; vast mountains; the vast empire of Russia.
3. Very great in numbers, quantity, or amount; as, a vast army; a vast sum of money.
4. Very great in importance; as, a subject of vast concern.
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