Ppm rhymes with:
p.m., pm, rpm, mgm, p.m., pgm, pm, rpm, alem, behm, bem, blehm, brehm, brem, cardizem, chem, clem, condemn, dehm, demme, em, emme, femme, fm, gehm, gem, gemme, hem, hemm, hemme, imm, jem, kehm, kem, khem, klem, klemm, klemme, lem, lemm, m, m., mgm, p.m., pgm, phlegm, pm, prem, rehm, rem, remme, rhem, rpm, schemm, schwemm, stem, stemm, swem, temme, them
Ppm sounds like:
p.m., pabon, paean, pain, paine, paino, pam, pammy, pan, panam, panama, panamanian, pane, panem, panini, pannone, pannu, panny, paone, papania, papin, papineau, papini, papon, pavon, pavone, pawn, pawnee, pay'n, payan, payin', payna, payne, peine, pen, pena, penh, penman, penn, penna, penney, pennie, penniman, pennino, penny, peon, peony, pepin, peppin, peyman, pham, phan, phen, phenom, phenomena, phenomenon, phinney, phippen, phnom, phone, phoneme, phoney, phony, piana, piano, pima, pimm, pin, pina, pine, pineau, pineo, pinho, pini, pinion, pinn, pinneo, pinney, pinnow, pino, piny, pinyan, pion, pippen, pippin, pm, pneumo, pneumonia, poem, pom, poma, pomona, pon, pony, poon, popham, poppen, puffin, puma, pun, puny, pymm, pyne