The spelling of the word "henault" can be explained using the International Phonetic Alphabet (IPA). This word is pronounced as /ˈhɛnoʊ/ with the primary syllable "hen" sounding like "when" without the "w". The second syllable "ault" is pronounced like the English word "alt" but with an "o" sound instead of "a". Thus, the spelling of "henault" is a representation of its unique phonetic sound. It is important to understand phonetics as it helps in correctly pronouncing and spelling words.