symmetric

Meaning

Adjective

• Symmetrical.
• Of a relation R on a set S, such that xRy if and only if yRx for all members x and y of S (that is, if the relation holds between any element and a second, it also holds between the second and the first).
• Using the same key (or keys that are trivially related) for both encryption and decryption.

Origin

• From Latin symmetria from Ancient Greek συμμετρία.