Er, for me, fission has /ʒ/ as well. Probably by analogy with fusion, I guess. I had an American science teacher who pronounced it with /ʃ/, but then again, she insisted upon species as /ˈspisiz/ rather than /ˈspiʃiz/. No one does that, except on TV...Xonen wrote:Yeah. You also get /S/ for <si> in words like "fission" (and similarly /Z/ for earlier */zj/, eg. "fusion").Whimemsz wrote:Uh I think it's just a simplification of /sj/. Like, "Marcia" was at one point /mArsj@/ --> now /mArS@/. That would be the simplest explanation, surely.
EDIT: But yes, it's called yod coalescence.