Helge Fauskanger coined the neologism palúna “swollen” in his Neo-Quenya New Testament (NQNT), probably intended to be based on [ᴱQ.] pulu- “swell” given ᴺQ. alapulúna “unleavened, unfermented, (lit.) unswollen”, also from NQNT. If so, its proper form would be puluna. I would use this adjective to mean both “swollen” and “leavened” (when applied to bread).