That would be true.... for CFA, as they seem to lump torties as a "division" of Particolor
I dont show, register, or judge for CFA.
In TICA for example, whom I do register and show with, have these color standards for which we are talking about.
Tortoiseshell Division. Cats which are heterozygous at the
sex-linked orange locus (i.e., red on one of two X-chromosomes without agouti (tabby patterning) or silvering or white spotting).
Particolor Division. Cats which exhibit the white spotting
factor, regardless of the amount of white (with the exception of lockets) or the basic background color.
To be clear the first definition I gave you about 2 posts ago was from my association, (my meaning the one I register with, primarily show in and judge for) AACE.
And it would seem that you've answered your original question with the link you posted. Their Site can give you a description for the CFA accepted term of Particolor HERE
Hope that clears things up....