[wuhn-uhp-muh n-ship] /ˈwʌnˈʌp mənˌʃɪp/
the art or practice of achieving, demonstrating, or assuming superiority in one’s rivalry with a friend or opponent by obtaining privilege, status, status symbols, etc.:
the one-upmanship of getting into the president’s car pool.
(informal) the art or practice of achieving or maintaining an advantage over others, often by slightly unscrupulous means
1952, from noun phrase one up “scoring one more point than one’s opponent” (1919).
The technique and practice of having the advantage over one’s opponent, esp keeping a psychological advantage by low cunning and subtle brilliance: a wide-open but good-humored game of political one-upmanship
[1952+; coined by the late British humorist Stephen Potter as a book title]
[wuhn-wey] /ˈwʌnˈweɪ/ adjective 1. moving, or allowing movement in one direction only: a one-way street. 2. valid for travel in one direction only: a one-way ticket. Compare . 3. without a reciprocal feeling, responsibility, relationship, etc.: It’s a one-way friendship. 4. not intended for return to a seller, dealer, etc., for reuse; disposable: one-way bottles. […]
- One-way function
cryptography, mathematics A function which is easy to compute but whose inverse is very difficult to compute. Such functions have important applications in cryptography, specifically in public-key cryptography. See also: trapdoor function. (2001-05-10)
- One-way hash function
algorithm (Or “message digest function”) A one-way function which takes a variable-length message and produces a fixed-length hash. Given the hash it is computationally infeasible to find a message with that hash; in fact one can’t determine any usable information about a message with that hash, not even a single bit. For some one-way hash […]
- One-way mirror
noun 1. a sheet of glass that can be seen through from one side and is a mirror on the other, used especially for observation of criminal suspects by law-enforcement officials or witnesses.