The spelling of the word "devonite" is /ˈdɛvənaɪt/. This word is derived from "Devon", a county in southwestern England, and the suffix "-ite" which means "a person associated with". A Devonite refers to a person from Devon. The phonetic transcription of this word shows that the stress is on the second syllable, and the "i" in the suffix is pronounced as /aɪ/. In summary, the phonetic transcription helps to understand the pronunciation and spelling of the word "devonite".
A phosphate of alumina found in Devonshire.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.