zero

The numerical symbol 0; a cipher.

The identity element for addition.

A cardinal number indicating the absence of any or all units under consideration.

An ordinal number indicating an initial point or origin.

An argument at which the value of a function vanishes.

The temperature indicated by the numeral 0 on a thermometer.

A sight setting that enables a firearm to shoot on target.

One having no influence or importance; a nonentity.

The lowest point.