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

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Part of Speech: Noun
Results: 2
1. Going beyond others, or beyond due limit; extreme; fanatical; uncompromising; as, an ultra reformer; ultra measures.
Part of Speech: noun
1. One who advocates extreme measures; an ultraist; an extremist; a radical.
Examples of usage:
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