The spelling of the word "Tranmer" can be explained using IPA phonetic transcription. The first syllable is pronounced with the "t" sound, followed by the "r" sound. The second syllable is pronounced with the "ae" sound, similar to the "a" in "cat", followed by the "n" sound and the "m" sound. Lastly, the final syllable is pronounced with the "er" sound, as in "bird" or "her". Therefore, "Tranmer" is spelled as /ˈtræn.mər/ in IPA.