plural of signing

plural of at sign

The username and password for logging in to a computer account. / An attempt to log in. / (more generally) An instance of signing on to something. / A person who signs on to something.

plural of at-sign

A symbol (=) used in mathematics to indicate that two values are the same, and elsewhere in various other ways, such as (formerly) to separate the signature from the content of a telegram.

The symbol $, used to indicate a price in dollars.

(mathematics) Any symbol (in particular ÷ or / ) used to denote the operation of division.

(mathematics) Any symbol (in particular × or · or *) used to denote the operation of multiplication.

(arithmetic) The symbol + used to denote the operation of addition, to indicate that a number is positive, and so on.

(arithmetic) The symbol −, used to denote the operation of subtraction or to indicate that a number is negative.