asymmetric

Etymology

From a- + symmetric, as Ancient Greek ἀσυμμετρία (asummetría, “disproportion, deformity”).

adj

1. Not symmetric.
   an asymmetric shape
   asymmetric gameplay, where different players have different experiences
2. (cryptography) Not involving a mutual exchange of keys between the sender and receiver.
3. (set theory) Of a relation R on a set S: having the property that for any two elements of S (not necessarily distinct), at least one is not related to the other via R.