The spelling of the word "Tricennarious" can be a bit challenging, but it becomes easier once you know its phonetic transcription: /trɪsɛnˈnɛərɪəs/. This word is derived from Latin "tricennii" meaning thirty years, and "-arius" meaning relating to. Tricennarious refers to an individual who is thirty years of age. Its correct spelling is crucial in order to avoid confusion with other similar-sounding words such as "tricentennial" which means three hundred years or "tricenarian" which means someone who is in their thirties.