Definition of ultra- in English:

ultra-

Syllabification: ultra-

prefix

1Beyond; on the other side of: ultramontane Often contrasted with cis-.
2Extreme; to an extreme degree: ultramicroscopic ultraradical

Origin

from Latin ultra 'beyond'.

Definition of ultra- in:

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Word of the day impudicity
Pronunciation: ˌɪmpjʊˈdɪsɪti
noun
lack of modesty