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ultra-
Pronunciation: /ˈʌltrə/

Definition of ultra- in English:

prefix

1To an extreme degree; very: ultramicroscopic
Synonyms
extremely, exceedingly, excessively, immensely, especially, exceptionally, unusually, extraordinarily, remarkably, uncommonly, extra;
Northern English  right;
Scottish  unco
British informal jolly, dead, ever so, well, fair
North American informal real, mighty, awful, plumb, powerful, way
South African informal lekker
informal, , dated devilish, frightfully
archaic exceeding
2Beyond; on the other side of: ultramontane Often contrasted with cis-.

Origin

From Latin ultra 'beyond'.

Definition of ultra- in:
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