The spelling of the word "Ulmar" can be explained using the International Phonetic Alphabet (IPA). The first two letters "Ul" are pronounced as [əl], with a schwa sound and a clear L sound. The last three letters, "mar", are pronounced as [mɑr], with a long A sound and a rolled R sound. Therefore, the correct spelling of this word is "Ulmar" and its correct pronunciation is [əlmar]. The IPA phonetic transcription helps to ensure accuracy and consistency in the spelling and pronunciation of words.