Is a SAK a multitool, or a knife with tools on it?
I personally consider anything that has more than one different impliment a multi tool. Like some knives that have three blades on them, that's a knife. A knife that has a blade, a bottle opener, a saw...that's a multi tool.
US Patents notwithstanding (and remember, there are lots of people out there that US Patent law doesn't apply to! ) I think that as the largest independant gathering of multitool enthusiasts in the world, we should define what makes a "Multitool" no matter how it's spelled. At the very least, we should have a definition for our use to dispel confusion....
....Since you mention the spelling, to dispel some of the confusion I took a quick survey and wasn’t able to find a major multi-tool manufacturer that uses the word “multitool” (without a hyphen). Bear, Kershaw, SOG, and Victorinox use the word “multi-tool”. Gerber uses the word “multi-tool” as well as the word “tool” and their trademark term “multi-plier”. Leatherman uses the word “multi-tool” but more often uses the word “tool”. Leatherman actually claims to have “created the entire multi-tool category”. Wenger is the oddball. Wenger uses the word “knife” instead. I associate the the spelling “multitool” with this website, not the spelling of the subject of this website. It’s advisable to avoid hyphens in domain names so multitool.org is a logical choice for a website. But I think the common spelling of the word is “multi-tool”.
A tire iron for instance, which has a flat blade on one end for removing the hubcap and a hex socket on the other end for loosening lug nuts, is not a multitool. It is a tire iron.
I agree that "multi-tool" is encountered more often than "multitool," but the manufacturers themselves are most certainly not consistant on one spelling or the other: