The concept of labor rights that individuals in the same workplace be given equal pay.

(idiomatic, ironic) Ostensibly equal, but in reality more privileged.

The concept that every person is to be treated equally by the law.

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.

Alternative form of equal sign

(cartography) Of a map, having the property that equal areas on the map represent equal areas on the mapped surface.

plural of equal sign

(music theory) A tuning system in which every interval (as a ratio of frequencies) is some exactly positive integral power of some smallest, other than the unison, base interval. In particular:

Used other than figuratively or idiomatically: see equal, marriage. / Marriage equality; the acceptance of same-sex as well as heterosexual marriages.

one twenty-fourth of a full day-night cycle (as opposed to one twelfth of a night or a day)