The spelling of the word "resnatron" can be explained using IPA phonetic transcription. The first syllable "res" is pronounced as /rɛs/ with a short "e" sound, followed by the "s" sound. The second syllable "na" is pronounced as /nə/ with a short "uh" sound, followed by the "n" sound. Lastly, the third syllable "tron" sounds like /trɑn/ with a long "a" sound, followed by the "n" and "t" sounds. Therefore, the spelling of "resnatron" corresponds with its phonetic transcription.