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Came before Vista.

Irritating Fanboys and silly marketing campaigns (albeit now Microsoft have emulated them too- see the pattern here?) cloud its actual benefits, but its largely used for its creative capabilities. And when I say, "capabilities" I mean Logic and Final Cut work only on OS X, Industry-standard programs.

A 'true' user of OS X is generally quite irritated and bemused by fanboys and marketing campaigns and couldn't careless what OS you use or how much money he/she paid for it, because it works for them and they are rather pleased no one bothers making Virus' for their OS.
Apple Fanboy: "lolololol OS X is sooo cooool and I liek it lots I can make coooool beats and moovies lol and adverts!!11!!"

Microsoft Fanboy: "yeeeeah lololol youre sooo ghey I can play videogames lolo and DOS websites, gg n00b"

"True OS X user" : "So I've got a job and get laid regularly. Both of you Sod off"
by AnonOSXuser January 06, 2009
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A 64 bit Operating System created by Apple Computer Inc. to accompany their computers. OS X runs on the Mach 3.0 microkernel. It also features FreeBSD services (daemons), tight hardware integration, and SMP-safe drivers. The most notable features in Apple OS X are Spotlight, Dashboard, and Exposé. Spotlight is an advanced intra-computer metadata search engine, which allows a user to search any file on the computers hard drive with no noticeable delay. It also searches words within documents, PDF files, and has many downloadable plugins that make third party programs compatible with spotlight. Dashboard features "widgets", or layer based mini-applications built on HTML, CSS, and JavaScript platforms. Activating the dashboard is as simple as pressing F12. Exposé is a way of managing one's desktop inside OS X. Exposé is activated by pressing either F9, F10, or F11. When F9 is pressed, all open windows instantly scale down into a tile pattern in order for the user to see all of them, allowing the user to pick the window he or she wants to switch to. When F10 is pressed, all open windows in the application that the user is using will scale down in order for he or she to pick the one that they want within that application. When F11 is pressed, all open windows scatter to the edge of the screen, revealing the desktop. The current version of OS X available is 10.4, codenamed Tiger. The next version of OS X, 10.5, is scheduled to come out in early 2007, possibly competing with the up and coming Windows Vista.
OMFG BBW OSX is teh shit!
by DJ Jazzy Jeff April 01, 2006
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A common misspelling applied to Apple's Mach-based operating system.

Compare Mac OS X, OS X.
Mac OS X-specific web searchs are tedious with the variation of spellings in the wild, such as: "OSX", "OS/X", "MacOSX", and "OS10".
by Dreamcore August 04, 2006
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Apple's Unix distribution. Properly utilizes a multicore CPU for the best multiprocessing experience, properly manages RAM and efficiently runs the machine, for as low as 4 hours to as much as 10 hours of continuous use on a MacBook, compared to 3 hours maximum on a Windows PC. Very difficult to obtain a virus, string, robust, reliable, and, if properly taken care of, can last well over a decade. It's worth it's price!
Guy: "Hey, can I try out OS X? I'm tired of Windows!
by Proud Apple User June 17, 2015
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The world's best, most secure and fastest operating system. Made by the world's best computing company, Apple. Based on the rock-solid UNIX. Beats the crap out of Windows XP
PC User: "When was the last time your computer crashed?"
Me: "A long time ago, before i got Mac OS X"
by HSVCoupe June 10, 2004
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As of now, OS X is the latest release of the Mac OS. It is commonly used by less-educated people, generally people that are gullible enough to believe the lies and slander that Apple says in their desperation to sell Macs. Here's some real facts:

Speed: The G5 Processor (what OS X runs on) is what Apple claims to be the fastest processor in the world. They released several irrelevant and suspicious benchmark tests that supposedly "proved" that this was true. However, Apple's policy to lie about their performance still stands. ACTUAL benchmarks have proven that Mac OS X running on a G5 is not only NOT the fastest operating system in the world -- it's slower than a Dell Pentium running Windows NT 4! If you want proof about this, just conduct a google search for "Apple lies G5", and you'll see what I mean.

Security: Mac OS X (and previous versions of the Mac OS) have generally been virus-free. However, this proves nothing about Apple's capabilities of creating a secure operating system. Nobody bothers to write viruses for the Mac. Why would they? Over 90% of people that use computers use PC's running Windows. Virus writers want to infect the most amount of computers in the world, so they attack Windows instead. Nobody wants to infect a Mac because hardly anybody uses them.

Stability: Mac OS X has a FreeBSD/UNIX kernel (core). Having used BSD myself, I have to admit that it is a good, stable operating system. However, it's evident that Apple managed to cripple the BSD kernel before they used it to base OS X. I've used OS X myself and it crashes a lot more than my eMachines running Windows 2000.

Support: Ha! Apple's idea of support is a bunch of pages telling you how great all their products are. After filling out a form and submitting your problem, THEN you are told that you won't get a personal response. Thanks a lot, Apple.

Also, the fact that Mac's can now run Windows is pitiful. All Apple is saying is that their own capabilities of creating an operating system suck so badly that they have to make computers capable of running Windows. Mac users have been bashing Windows for years, and now they want to use it?

Thats pathetic...
Mac user: OS X is faster, more secure, more stable, and easier to get support for than any release of Windows.

Me: *Bursts into raucous laughter at the mac user's stupidity*
by Macinshit August 22, 2006
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OS X is the shortened version of Mac OS X, an operating system made by Apple Computer Inc. for their Macintosh products. OS X is a Linux distro, mostly based off of NeXTSTEP, another Linux distro.
Usage in sentences:
Technician: "What version of OS X you running?"
George: "Sierra, I think"
via giphy
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