How Do You Spell MERCUROAN?
Pronunciation: [mˈɜːkjʊɹˌə͡ʊn] (IPA) 
The word "mercuroan" is spelled with a "u" instead of an "i" to represent the "y" sound, as in the word "mercury." This is indicated in the IPA phonetic transcription as /ˌmɜːkjʊˈrəʊən/. The "r" before the final syllable is pronounced to maintain the original Latin pronunciation of the element mercury, which is the inspiration for the name of the planet Mercury. Additionally, the ending "-an" reflects the fact that Mercury is a terrestrial, or rocky, planet.
