Approximation to the 'hýbris'
Edition at September 26: Some things revisited.
So far it has been more than four years since I first heard about the word 'hybrid'. It literally means "The combination of two or more different things". I have tried several times to investigate where does the word comes from, but I never got a satisfactory answer. It appears that it derived from this Greek word 'Hubris' (also sometimes found as 'hýbris'), means something 'disproportionate' and it's the arrogance leading to a punishment by Nemesis.
Nietzche tries to approximate to an explanation of the Greek civilization, and the way they changed from Dionysus to Apollo on "The Birth of Tragedy". If Apollo's the light, then Dionysus was the darkness; if Apollo is balance, Dionysus is ecstasy, and so forth.
It doesn't necessarily has to be with going from Evil to Good. It apparently is the evolution from the flesh to the mind; Rephrased, it fits the way of thinking that was going on the time the Philosophy appeared on Greece, and so did Apollo and Athena.
My first theory (posted in here a couple weeks ago, or one) was that Dionysus was originally associated to this word. I'm afraid after a lot of digging, it's false, though there's one incident that involves Bacchus-Dionysus and some hubris (Pentheus against Dionysus) but obviously no direct relation on it.
It appears that during the Roman empire there was some usage of the 'hibrida' word, on the same aspect of 'god defiance'. By reading Lewis and Short's Latin Dictionary, you can see the Latin word 'hybrida' may be related to the Greek word 'hybris'.
But, according to the Oxford English Dictionary, the word 'Hybrid' is derived from Latin hybrida, meaning the "offspring of a tame sow and a wild boar".
Maybe the idea of these two beings breeding a hybrid IS defying the god's will, and therefore, a way of Hubris. Maybe not.
Back on my initial theory; Bacchus-Dionysus is usually pictured as an androgynous (a man who looks like a woman, or a vice-versa) god, associated with Centaurs and Ipotanes, both half-human, half-horse entities. There's some sort co-relation between the therms, but with this much of information, I can't be certain if I'm just speculating (Okay, I can be certain. I am speculating).
