My mac came with the oxford American/english dictionary on it...didn’t yours? Not being sassy, just curious? Mine is intel based and came with Tiger...fyi.
The New Oxford American Dictionary is not the same thing as the Oxford English Dictionary. The former is, don't get me wrong, a fine dictionary for 99% of what most people use a dictionary for. The latter is uncontested as the authoritative dictionary of the English language, and for folks who are into words it's fun to browse for the etymologies alone.
A printed set of the OED (20 volumes, 22,000 pages) costs about a grand. The CD-ROM costs $295, and subscribing to the online version costs $295 a year. It's not for everyone.
It comes with a short version. The dictionary I’m talking about is the unabridged Oxford English Dictionary. It comes in 20 printed volumes or 1 CD-ROM. It Contains more of a history of the English language. They do not have a version that runs on a Mac. Seems crazy to me but c’est la vive.