Enneatic
Pronunciation : En`ne*at"ic, En`ne*at"ic*al
Part of Speech : a.
Etymology : [Gr.
Definition : Defn: Occurring once in every nine times, days, years, etc.; every ninth. Enneatical day, every ninth day of a disease. -- Enneatical year, every ninth year of a man's life.
Source : Webster's Unabridged Dictionary, 1913