Definition of 'strange matter' says it's made of quarks. All (bulk) matter is made of quarks (the up and down varieties). Strange matter is a hypothetical state where a substantial portion of the quarks 'in the mix' are strange quarks.
See the wikipedia article for details, then adjust definition to match. I would definitely include the 'hypothetical' nature of strange matter.
Yes, our definition was misleading. I've made an attempt to correct it, but please make any adjustments that you think necessary. Dbfirs 18:28, 13 April 2011 (UTC)