symmetric

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English[edit]

Etymology[edit]

From Latin symmetria from Ancient Greek συμμετρία (summetría).

Adjective[edit]

symmetric (comparative more symmetric, superlative most symmetric)

  1. Symmetrical.
  2. (set theory) 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).
    "Is a sibling of" is a symmetric relation.
  3. (cryptography) Using the same key (or keys that are trivially related) for both encryption and decryption.

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