numbersymbol

2. A written mark such as +, -, or = used in math to show an operation or relation.

The plus sign is a number symbol that tells you to add.

3. A character in a writing system that represents a quantity rather than a sound.

In some old scripts, a number symbol was used instead of spelling out the amount.

4. A key or icon on a phone or keyboard that types a digit.

Press the number symbol on the keypad to enter your code.