Originally Posted by
memebag
So if a bike frame is made from two or more metallic elements combined into another metal, then calling that bike frame "alloy" isn't changing the definition in any way.
The problem isn't that they call a bike made from two metals "alloy", the problem is that they use the word "alloy" to refer exclusively to bikes made with aluminum. People say things like "I prefer alloy bikes to steel bikes." or "I don't have any alloy bikes because I prefer steel bikes." This last sentence is incoherent using your definition of alloy.