neur [nerve]

neuritis (inflammation of a nerve)

neurologist (a physician who treats the nervous system)

nov [new]

innovation (something newly introduced)

renovate (to make like new again)

numer [number]

enumerate (to find out the num­ber)

innumerable (too many to count)

omni [all, every]

omnipresent (present everywhere)

omnivorous (all-eating)

onym [name]

anonymous (without a name)

pseudonym (false name)

ortho [straight]

orthodontist (someone who straight­ens teeth)

orthodox (straight or usual belief)

pac [peace]

Pacific Ocean (peaceful ocean)

pacify (make peace)