Dyphonate is a word that can be a bit tricky to spell. It is pronounced as /daɪfəneɪt/ with the stress on the second syllable. The first two letters "Dy" are pronounced as a single syllable /daɪ/. The "ph" is pronounced as an "f" sound, making the middle syllable "fo". The final syllable "nate" is pronounced as /neɪt/. Dyphonate is not a commonly used word, but it means to combine two substances using a diaphragm.