Prejudice that one operating system is inferior to another, usually to ones favorite operating system.

Such prejudice can arise when one is accustomed to a particular platform, whether he or she be end-user, or programmer. It can also occur, when there's too much diversity in a particular family of operating system, that one attempts (at no avail) to define the core (one might call soul) of it.
It's purely operating system racist when you chant socket over STREAMS, scream poll over select, advocate Linux over BSD, and trys to trump your Unix over Windows.
by DNJF March 16, 2017
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OSI (Operating System Index) A method to determine the level of geekiness or nerdom in an individual using the number of operating systems they use.
Larry: Lewis has so many damn computer gadgets.
Bill: I know, right? What's his OSI (Operating System Index) then?
Larry: 6
by daygzzz November 4, 2012
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An operating system prone to crashing - commonly referred by newbs as an Instable Computer - however, calling it such is incorrect.
Windows XP is an instable operating system. It tends to crash when documents remain unsaved for long periods of time.
by The Overmind July 7, 2004
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The most revered trade in the Royal Corps of Signals of old. Put on a pedestal by the Technicians and Driver Linemen. Abilities included listening to fuckwits whilst cooking a full English breakfast on a kero heater, and sleeping under a vehicle before being woken up after 10 minutes to go on stag.
Systems Operators were only properly utilised in times of war, when the big guns were required.
by Professional Englishman January 2, 2016
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Human Operating System or HOS is

an operating system designed by and for humans. The operating system is what allows you the user, a human to function and complete tasks.
The reason Gary is speaking with an English accents is that his human operating system (HOS) default setting is British.
by Snake Master November 10, 2020
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Main computer, phone, tablet, and stuff. That's an annoying thing you have to deal with if you hate it. Either install a new one or throw your computer, phone, or tablet down your stairs
by josah January 16, 2022
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