no its just like the normal ones
t90 omni ball - http://www.epltalk.com/wp-content/uploads/2008/06/official-premier-league-ball.jpg
''omni'' is a term meaning all totally e.g omni-present (be in many places at the same time), omni-science (knows everything to infinity) While multi stand for many especially more than two e.g multi-lateral (more than two contries).
Omni tires are made by Omni United in Singapore. I have no reports of whether they are good or not.
There are many types of Materials for coats. There are "wicking" materials, (wicking means ability to like soak up sweat) witch are: Polypropylene Nike Dry-Fit Omni-Dry Gortex Wool There are also materials that can Keep you warm and dry. Such as, Omni-heat and wool There are some materials used for a coat =)
Dodge Omni was created in 1978.
Omni - magazine - was created in 1978.
Omni - magazine - ended in 1998.
The Omni Group was created in 1989.
Omni Aviation was created in 1988.
Omni Coliseum was created in 1972.
Omni Coliseum ended in 1997.