What's the difference between ultra and ultraist?

Ultra

Definition:

(a.) Going beyond others, or beyond due limit; extreme; fanatical; uncompromising; as, an ultra reformer; ultra measures.
(n.) One who advocates extreme measures; an ultraist; an extremist; a radical.

Example Sentences:

(1) Now there is talk of adding a range of ultra-trendy kale chips and kale shakes to the menu as well as encouraging customers to design their own bespoke burger.
(2) It’s clear which way the ultra-right community around Ukip wishes to go: their timelines are full of praise for Marine Le Pen and Geert Wilders , and blazing with imagery – both real and fake – of migrant riots in France and Sweden.
(3) The combined use of zonal ventilation and the coverall achieved ultra-clean air conditions.
(4) The implications of Katz's model for dose-response relations apply only at ultra-high absorbed doses in Burch's model.
(5) Mohammed Salama, 23, an Al Ahly ultra whose leg was broken in the stadium riot, said it became clear at half-time in the match between the two historical foes that trouble was brewing.
(6) The mayor of London’s proposals to tackle the capital’s “toxic” air also include a big expansion of a planned Ultra Low Emissions Zone (ULEZ) and a faster roll-out of cleaner buses.
(7) Citing information gathered from "intelligence services, witnesses and phone taps" he named the Liberal Democratic party of Russia (LDPR), an ultra-nationalist party in Russia's Duma.
(8) The persistency of elution over long time after subsequent transfer to fresh water was calculated at 210 nm absorbance with ultra violet spectrometer.
(9) Put simply, there would have to be evidence that ultra-low oil prices are having only a temporary downward impact on inflation and have helped disguise upward pressure on wages caused by falling unemployment.
(10) FL cells infected with vaccinia virus or its recombinant carrying the gag gene of human immunodeficiency virus type 1 (HIV-1) were examined by ultra-high-resolution scanning electron microscopy.
(11) Eliminating the lymphocytes from ultra-violet radiated blood specimens, we observed a decreased effect by this retransfused blood on the whole blood viscosity after 9 radiations to 18%.
(12) If true, this is the first demonstration of the ischemic penumbra by MR imaging and may reflect our use of Wistar rats, a new image analysis technique, and ultra-high resolution MR imaging.
(13) A long spell of ultra-low interest rates has not driven a rise in inequality in the UK, the deputy governor of the Bank of England has said, rebuffing criticism that central bank policy had hurt some households.
(14) Ultra-thin sections were cut and observed under electron microscope.
(15) A complex of diagnostic and therapeutic measures, including the establishment of indications for operative treatment, development of tactics, use of ++physico-technical methods (ultrasound study, rheography, electrocardiography, ++roentgeno-contrast angiography, ultra-violet blood irradiation, electromyostimulation) was developed.
(16) While Egypt's military rulers were quick to blame football hooliganism, a group of hardline Al Ahly fans, known as ultras, accused the police of intentionally letting rivals attack them because of their historic antipathy to the security forces and their role at the forefront of anti-Mubarak protests a year ago.
(17) Among the new diagnostic methods, specific tumor markers and high-resolution ultra-sonography have been proved especially useful.
(18) So it’s comforting to note that Spectre seems to be offering a significant upgrade: the trailer shows Q introducing Bond to his new ultra-speedy Aston Martin DB10, and promising it boasts a “few tricks”.
(19) Ultra-violet and infra-red rays are inactive on the autonomic retina and on the hypothalamus.
(20) Representative lipolytic isolates were selected and tested for growth, lipase activity and lipolysis in ultra-heat-treated milk at temperatures ranging from 5 degrees to 30 degrees C. Pseudomonas fluorescens was the most frequently encountered species but Ps.