Iridaemia is a medical term used to describe an excess of iridium in the blood. The word is spelled /ˌaɪrəˈdiːmiə/ in IPA phonetic transcription, with the stress on the second syllable. The letter "i" is pronounced as the vowel sound in "eye," while "ae" is pronounced as the sound "ee." The final "ia" is pronounced as "ee-uh." This complex spelling reflects the Greek roots of the word, with "irid-" meaning "iris" and "-aemia" meaning "blood condition."
Iridemia.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.