Pro-sess-es

Next time your professor pronounces it “Pro-suh-seez”, refer him or her to this.

USAGE NOTE In recent years there has been a tendency to pronounce the plural ending –es of processes as (-ēz), perhaps by analogy with words of Greek origin such as analysis and neurosis. But process is not of Greek origin, and there is no etymological justification for this pronunciation of its plural. However, because this pronunciation is not uncommon even in educated speech, it is generally considered an acceptable variant, although it still strikes some listeners as a bungled affectation. In a recent survey 79 percent of the Usage Panel preferred the standard pronunciation (-ĭz) for the plural ending –es and 15 percent preferred the pronunciation (-ēz). • Although the pronunciation for process with a long (o), (prō’sĕs’), is more usual in British English, it is an acceptable variant in American English.

Yes, that’s right, pronouncing it “pro-suh-seez” instead of “pro-sess-es” is LESS educated. If you do that, you don’t know the word is not of Greek origin. So, professors, stop trying to sound so educated by mispronouncing a common word! Nobody’s impressed.