The spelling of the word "phanerosis" can be a bit tricky, but it can easily be broken down using the International Phonetic Alphabet (IPA). The first syllable, "phan," is pronounced as /fæn/. Then, the second syllable, "er," sounds like /ɛr/ as in "air." Lastly, the third syllable, "o," has a long o sound that can be transcribed as /oʊ/. So altogether, "phanerosis" is pronounced as /fæn.ɛr.oʊ.sɪs/.
The act or process of becoming visible.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.