According to Wikipedia, it is called a vinculum.
obelus
Solidus.
division
Plus, minus, division sign, multiplication sign, and equal sign... +,-, /, x, =
Divide (by)
solidus
it can be called a solidas or i division bar
obelus
A quotient
Solidus.
The division symbol is called an obelus (÷) or a division sign. It is used to represent the operation of division in mathematical expressions.
A muntin
Division
Division is a mathematical term. Division is when you take to number and divide them together.
Mathematical.
multiplication
division