Oh, dude, the dot in a decimal is called a decimal point. It's like the tiny superstar that separates the whole number from the decimal part. So, yeah, decimal point - it's not just there for decoration, it's doing some serious mathematical heavy lifting.
dot, according to Webster's dictionary
The dot of an 'i' is called a tittle and the cross of a 't' is called a T-bar.
It depends on the context. A dot could be:a decimal pointabove a digit after a decimal: an indication of recurrenceif one of three dots: it could stand for "and so on" eg 1, 2, 3, ...a symbol for multiplication: eg a.b = aba dot product in vectorsa mathematical operation in group theory.
A dot can mean several things, depending on the context.It can separate the whole part of a decimal number from the fractional part.It (or a pair of them) are used to indicate repeating decimal expansions.It can indicate a derivative.It can stand for the scalar product of two vectors.
It is normally a dot over the decimal digit or over the first digit and last digit if there are more than one recurring digits.