The word "Montaine" is the archaic spelling of "mountain". The IPA phonetic transcription for "Montaine" is /mɒntˈeɪn/. The "m" sound at the beginning is followed by the "oh" sound represented by "o". The "nt" is pronounced by making a stop with the tongue against the roof of the mouth, then releasing it to make the "n" sound. The "ay" sound in the middle can also be pronounced as "i" or "ɪ" in some accents. The final "e" is silent.
The word "Montaine" is likely a variant spelling of the word "mountain". The etymology of the term "mountain" can be traced back to Old French "montaigne", which came from Latin "montanea" or "montanus", meaning "mountain, hilly". The Latin term ultimately derived from the word "mons", meaning "mountain". The word "mountain" itself has roots in various ancient languages, including Greek "oros" and Sanskrit "araṇya". Over time, the spelling and pronunciation of the word evolved in different languages, giving rise to variations like "montaine" in English.