It could be either. I'd try "eye" -"sas".
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raindoctorGeneral heuristic: the less syllables, the better.Good rule! I'll keep it in mind!
AnonymousAnother possible pronunciation is "izz-ess." If in doubt, stick with "eye-ess-ay-ess" until you get confirmation of the typical pronunciation.I see. Thank you!
CliveIt could be either. I'd try "eye" -"sas".Thank you, Clive!