The correct spelling of the word "Rutilian" is /ruːˈtɪliən/. This word consists of three syllables and is pronounced as "roo-till-ee-uhn". The first syllable, "ruu", is pronounced as in the word "rude". The second syllable, "til", is pronounced as in the word "until". The final syllable, "ee-uhn", is pronounced as in "EON". "Rutilian" is an adjective used to describe anything that relates to or contains rutile, a mineral composed mostly of titanium dioxide.