- ennead (n.)
[ennead 词源字典]
- "group of nine things," 1650s, from Greek enneas (genitive enneados) "group of nine," from ennea "nine" (see nine). Especially in reference to the divisions of Porphyry's collection of the neo-Platonic doctrines of Plotinus. Related: enneadic.[ennead etymology, ennead origin, 英语词源]