plural of equality sign

plural of numero sign

A sign that serves as an abbreviation of the word number. It comprises a capital letter N with a lowercase letter o, the latter typically superscript and sometimes underlined. Examples of numero signs include No., No, №, and Nº.

plural of null sign

(set theory) The sign ∅, associated with empty sets.

plural of sign-out

An instance of signing out; a procedure executed when exiting a facility, ending a computer session, etc.

plural of multiplication sign

Any graphic symbol used as a shorthand for a currency's name, especially in reference to amounts of money.

(mathematics) The signum function.