The spelling of the word "osphyitis" is quite complex, and it can be quite tricky to get right. The word is composed of several different sounds, and each of these sounds must be properly represented in order to spell the word correctly. IPA phonetic transcription is a useful tool for understanding the sounds that make up a word, and it can help to clarify the spelling of words like "osphyitis" that can be difficult to get right. With practice, anyone can learn to spell even the most challenging words with ease.
Inflammation of the muscles in the lumbar region, lumbago.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.