"Ennead" is a noun meaning "a group of nine." It comes from the Greek word "ennea," meaning "nine."
If you are looking for related terms, you might be interested in:
* Enneagram: A symbol consisting of a nine-pointed star, used in a personality typing system.
* Nona-: A prefix meaning "nine" (e.g., nonagenarian - a person who is 90 years old or older).
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