What is the meaning of Ultra?

Extreme; far beyond the norm; fanatical; uncompromising.

An ultraroyalist in France.

An extremist, especially an ultranationalist.

An especially devoted football fan, typically associated with the intimidating use of extremist slogans, pyrotechnics and sometimes hooligan violence.

An ultramarathon.

An ultra-prominent peak.

Code name used by British codebreakers during World War 2 for decrypted information gained from the enemy.

Ellipsis of ultrakevyt (ultralight). (aircraft that weighs very little)

Ellipsis of ultraäänitutkimus.

ultra, extreme

extremist

an ultra-royalist during the Bourbon Restoration period in France

ultra: beyond due limit

further, additional

beyond

beyond, further

additionally, besides

ultra, extreme

extreme

far-right

furthermore, in addition, moreover

far-right extremist

hooligan, hardened fan

Source: wiktionary.org