"Is a sibling of" is a symmetric relation.
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Symmetric — Sym*met ric, a. Symmetrical. [1913 Webster] … The Collaborative International Dictionary of English
symmetric — index equal Burton s Legal Thesaurus. William C. Burton. 2006 … Law dictionary
symmetric — 1796, from SYMMETRY (Cf. symmetry) + IC (Cf. ic) … Etymology dictionary
symmetric — A relation is symmetric when if R xy, then R yx . For example, if a person x has the same parents as y, then y has the same parents as x … Philosophy dictionary
symmetric — symmetrical ► ADJECTIVE ▪ made up of exactly similar parts facing each other or around an axis; showing symmetry. DERIVATIVES symmetric adjective symmetrically adverb … English terms dictionary
symmetric — adjective having similarity in size, shape, and relative position of corresponding parts (Freq. 7) • Syn: ↑symmetrical • Ant: ↑asymmetrical (for: ↑symmetrical) • Similar to … Useful english dictionary
Symmetric-key algorithm — Symmetric key algorithms are a class of algorithms for cryptography that use trivially related, often identical, cryptographic keys for both decryption and encryption.The encryption key is trivially related to the decryption key, in that they may … Wikipedia
Symmetric in Design — Symmetric in Design … Википедия
Symmetric Digital Subscriber Line — (SDSL) is a Digital Subscriber Line (DSL) variant with T1/E1 like data rates (72 to 2320 kbit/s). It runs over one pair of copper wires, with a maximum range of about 3 kilometers or 1.86 miles. The main difference between ADSL and SDSL is that… … Wikipedia
Symmetric federalism — is found in a federation in which the constituent states possess equal powers. This is in contrast to an asymmetric federation, where a distinction is made between constituent states.United StatesAs far as the fifty proper states are concerned,… … Wikipedia
