[eru]

Some operators are so abstract that they don't really have a good name.

Eg if you are talking about groups in general, how do you pronounce the group operation ∘? At uni, we usually just called it Kringel.

[brandonbloom]

The name can be arbitrary, as long as it's unambiguous. By the way, here's what mathematica says when I copy paste that and enter x∘y: SmallCircle[x,y]

Also fun:

    In[3]:= SpokenString[x\[SmallCircle]y]
    Out[3]= "SmallCircle of x and y"

Which can be turned in to sound:

    Speak[x\[SmallCircle]y]

[eru]

Actually, it's not even unambiguous. In some sense, it's like an unbounded variable.