The spelling of the word "Newstrom" can be explained using the International Phonetic Alphabet (IPA) as "njuːstrəm". The 'N' is pronounced as the phoneme /n/, followed by the 'EW' as the diphthong /juː/. The 'S' is pronounced as the voiceless phoneme /s/ and the 'TR' as the consonant cluster /str/. Finally, the 'O' is pronounced as the short vowel sound /ə/ and the 'M' as the nasal consonant phoneme /m/. The correct spelling of "Newstrom" is essential to avoid confusion or misinterpretation in written communication.