The spelling of the word "BYAS" can be explained using the International Phonetic Alphabet (IPA). The first sound in the word is the voiced bilabial fricative /b/. This is followed by the diphthong /aɪ/ which is made up of the sounds /a/ and /ɪ/. Finally, there is the voiceless alveolar fricative /s/. The spelling of "BYAS" accurately represents the phonetic sounds produced when saying the word. So, if you see "BYAS" written, you can pronounce it as /b-aɪ-s/.