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8.
The deluded Belief that one can have sexual relations with any entity, whether it may be male, female, animal, alive, dead ect.
Oh look there is Omni-sexual Pete, he is such an Omni-sexual. Yeah i know, i heard he likes ice-cream. Me too! am i Omni-sexual? Not unless you fuck it.
by bangbangbong April 02, 2011
 
9.
Someone or thing that will have sexual activities with anything.
sexwith a blowup doll,a female ,a male, an animal ,etc.
by TC May 27, 2004
 
10.
Being sexually attracted to anything and everything through all history of time and space.
"Tom just admitted to being attracted to toasters, he must be omnisexual!"

"Dude, that lamp post is so sexy."

"You know what I've always found really attractive? String Theory."
by openomnisexual April 25, 2013
 
11.
one who proudly distributes his/her sexual affection over a broad range of places, people, and at various events..from "omni" meaning "to be everywhere at once" and "sexual" meaning "sexual"

not to be confused with the heralded Omnisexual: one who distributes his/her sexual affection in and around the Atlanta area esp. near the Omni arena and recently any other arena in the area
bro, here comes Soo. look the other way, before she tries to cast her omni-sexual self our way

by waynerino August 16, 2007
 
12.
into everything, litiraly
jhon is omni sexual, he would fuck your dog if your not cearful
by james the cunt flap August 16, 2006
 
13.
The act or acts of having intimate relationships with inanimate object.
Boy 1 "Hey did you hear that Billy is a omnisexual"?
Boy 2 "What does 'omnisexual' mean"?
Boy 1 "I dunno, I think they fuck plants".
by Chicken Sundae May 03, 2014
 
14.
Someone who is highly sexual, often having sex with both genders. A very sexual person who will almost try anything kinky, and will vary sexual orientations.
Linda didn't hook up with Dave last night, so she hooked up with Carol and her dog instead because of her omni-sexual tendencies.
by Nutflushdraw October 30, 2005