Word Study
omni-
CIDE DICTIONARY
omni-, [L. omnis all.].
A combining form denoting all , every , everywhere ; as in omnipotent, all-powerful; omnipresent; omnivorous. [1913 Webster]
OXFORD DICTIONARY
omni-, comb. form 1 all; of all things.
2 in all ways or places.
2 in all ways or places.
Etymology
L f. omnis all
For further exploring for "omni-" in Webster Dictionary Online