The correct spelling of the phrase "most celiac" is /moʊst ˈsɛli.æk/. "Most" is pronounced with a long "o" and a soft "s" while "celiac" is pronounced with stress on the second syllable and a hard "c" sound. It's important to use the correct spelling when discussing celiac disease, an autoimmune disorder where consuming gluten leads to damage to the small intestine. Many individuals with celiac disease must follow a strict gluten-free diet to manage their symptoms.