To save someone the lookup, this is:

    U+00B7 MIDDLE DOT = midpoint (in typography); Georgian comma; Greek middle dot (ano teleia) • also used as a raised decimal point or to denote multiplication; for multiplication 22C5 is preferred

But note there is a separate Unicode scalar value for the dot operator:

    U+22C5 DOT OPERATOR • preferred to 00B7 for denotation of multiplication