The word "Thermantidote" is spelled using the IPA phonetic transcription, which is /ˌθɜrmənˈtaɪdoʊt/. The "th" sound is represented by the symbol /θ/, the "er" sound is represented by /ɜr/, and the "a" sound is represented by /ə/. The "nt" sound is represented by /nt/, and the "i" sound is represented by /ɪ/. Finally, the "dote" part of the word is spelled using the symbols /doʊt/. This unique combination of sounds and symbols creates the spelling of the word "Thermantidote."