The word heroner, although rare and archaic, is a valid spelling of the term heron hunter. To understand its pronunciation, we can use the International Phonetic Alphabet (IPA). The first syllable "he-" is pronounced as "hɛ", rhyming with "set". The second syllable "-ron" is pronounced "rɑːn", meaning the "o" is pronounced as "a" in "father". Finally, "-er" is pronounced "ər", sounding like "uh" in "butter". Therefore, the correct pronunciation of this word is "HEH-ron-uh".