Pyrotechnics rhymes with:
technics, technics, technics, audiotronics, avionics, beatniks, calisthenics, centronics, chamonix, chetniks, clinic's, clinics, conics, cryogenics, cynics, diasonics, dominic's, ebonics, electronics, electronics', endotronics, endotronics', enix, environics, ethnics, eugenics, fibronics, flextronics, harmonics, hispanics, histrionics, ionics, kibbutzniks, lasersonics, lumonics, mannix, mechanics, mechanics', microelectronics, minix, minnix, mnemonics, molonicks, mullenix, mullinix, mulnix, munich's, nucleonics, onyx, organics, panic's, panics, penix, pennix, personics, phenix, philharmonic's, phoenix, phonics, photronics, pinnix, plantronics, refuseniks, resnick's, respironics, sconnix, siliconix, skolniks, sonics, sputniks, technics, tectonics, tektronix, telectronics, telephonics, tonics, unix, vinick's, vinnick's, vitronics
Pyrotechnics sounds like:
paradigms, partisans, prioritizing, producing, protozoans, pyrotechnic