An amalgamate is a verb for amalgam which means "to combine as a new entity" so Dr. Baltar is referring to the half human/cylon in Sharon as one. DC and Marvel had a joint venture and created Alamgamation where they took to Marvel and DC characters and comined them. I remember Superman being merged with Captain America and he was Super America, or something. Definately something else than a gas station. Also don't give the word amalgamate any special distinction other than it is in fact a combination of a human and a cylon. Dr. Baltar, being a scientist, would use that word in place of half-breed not for fear of it being misunderstood for a derogatory racial but that the Cylon "race" is not considerd a race. But toasters.