The spelling of the word "Adastion" can be explained through its phonetic transcription in IPA (International Phonetic Alphabet) as /ədæstjən/. This word refers to a genus of flowering plants belonging to the family Asclepiadaceae. The first syllable is pronounced with a schwa sound, followed by stress on the second syllable, which has the sound "æ" as in "cat." The final three syllables comprise the consonant cluster "stj" and a schwa sound. The spelling of Adastion thus reflects its pronunciation in English.