The word "phlyzacium" is spelled with a silent "p" followed by the "h" which is pronounced as a "f" sound. The "y" is pronounced as "i" and the "z" is pronounced as "z" in words like "zip" or "zoo". The "a" is pronounced as "ae" and the "c" is pronounced as "k". The final "i" is pronounced as "ee" and the last "um" is pronounced as "əm". The correct IPA phonetic transcription for "phlyzacium" would be /flaɪˈzeɪsiəm/.
1. Phlyctena. 2. Ecthyma.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.