Homo (Latin homō "human being") is the genus that encompasses the extant species Homo sapiens (modern humans), plus several extinct species classified as either ancestral to or closely related to modern humans (depending on a species), most notably Homo erectus and Homo neanderthalensis.
So if you're reading this and your not a homo, then you must be a space alien.
Originally Posted by Dev Null
WRONG!! Homo is synonymous with the word "same". So, just to give you an example of the use of said prefix here we go. SO, for educational purposes we will use the word "homo sexual". The definition of a "homo sexual" is a "homo sapien" who is sexually attracted to members of the same sex. A common trait among homosexuals are those who become sexually aroused when they are naked in a room with at least 5 other "homo sapiens" who are of the same sex as they are.
Now hopefully this was insightful for you, and if you don't mind I would like to get back to enjoying some of my delicious "Plain Vanilla " ice cream, because that is just the kind of guy I am,
just "Plain Vanilla"