Home Misspellings How to spell milennia? Milennia or millennia? Which one is correct? by hersey September 29, 2018 Reading Time: 0min, 7sc + - 0 Milennia or millennia Which one is correct? You can find the answer below. Incorrect Milennia Correct Millennia You can find more information about Millennia word here. Rate this post Correct spelling of MilenniaHow do you spell Milennia