Definition of ultra
(Entry 1 of 3)
: going beyond others or beyond due limit : extreme
ultra
nounDefinition of ultra (Entry 2 of 3)
: one that is ultra : extremist
ultra-
prefixDefinition of ultra- (Entry 3 of 3)
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Merriam-Webster unabridged
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Time Traveler for ultra
The first known use of ultra was in 1818
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