Three Syllables
bubonic, demonic, fibronic, flextronic, gnomonic, harmonic, hedonic, ionic, ironic, laconic, leptonic, masonic, medtronic, miltonic, mnemonic, ovonic, personic, photronic, planktonic, plantronic, platonic, plutonic, pneumonic, sardonic, symphonic, synchronic, tectonic, tranzonic
Four Syllables
allophonic, avionic, catatonic, diasonic, diatonic, electronic, embryonic, ganglionic, hegemonic, histrionic, hydroponic, hypersonic, hypertonic, isotonic, lasersonic, monophonic, nucleonic, panasonic, pharaonic, philharmonic, polyphonic, propionic, respi
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