a staircase string whose top follows the profile of the steps in such a way that the treads project beyond its outer face.
- Open switch
(IBM, probably from railways) An unresolved question, issue, or problem. [Jargon File] (1994-11-11)
noun, Thermodynamics. 1. a region separated from its surroundings by a boundary that admits a transfer of matter or energy across it. noun 1. (computing) an operating system that is not specific to a particular supplier, but conforms to more widely compatible standards noun a changeable and alterable set of doctrines, ideas, or things; a […]
- Open system architecture
operating system (OSA) A competitor to IBM’s SNA. (2005-03-07)
- Open systems interconnect
Open Systems Interconnection