More octennial is spelled as "mɔr ɒkˈtɛnɪəl". The pronunciation of each letter is represented by the International Phonetic Alphabet (IPA) symbols. "Mɔr" represents the sound of the letter "o" as in "four", while "ɒkˈtɛnɪəl" is pronounced with a short "o" as in "hot" followed by a "k" sound and stressed "TEN" followed by the schwa sound "əl". This word is an adjective that means "happening every eight years or lasting for eight years."
The term "more octennial" is not a widely recognized or commonly used phrase, and there is no specific etymology for it. It seems to be a combination of two separate words, "more" and "octennial", which are described below:
1. More: The word "more" comes from Middle English "more" or "mo", which was derived from Old English "māra", meaning greater or additional. It has been used as a comparative form of "many" or "much" to indicate a larger quantity or degree.
2. Octennial: The word "octennial" is derived from the Latin word "octennis", which means "lasting for eight years". It combines "octo", meaning "eight", and "-ennial", which is a suffix denoting a specific period of years. Therefore, "octennial" is an adjective used to describe events or occurrences happening every eight years.