The spelling of the word "excaecation" might seem a bit confusing, but it actually follows the rules of English phonetics. The word is pronounced as /eks-kē-ā-shən/, with emphasis on the second syllable. The letter "c" is pronounced as /k/ before the vowels "a" and "e", while the "ae" diphthong is pronounced as a long /ē/ sound. The word itself means "a state of being blinded" or "an act of blinding", and is typically used in a medical or scientific context to describe vision impairment.