aeon
Concise Oxford English Dictionary © 2008 Oxford University Press:
aeon /ˈiːən/
▶noun (US or technical also eon)
- 1 an indefinite and very long period.
- 2 Astronomy & Geology a period of a thousand million years.
- 3 Geology a major division of geological time, subdivided into eras.
- 4 Philosophy (in Neoplatonism, Platonism, and Gnosticism) a power existing outside time, deriving from the supreme deity.
– origin C17: via eccles. L. from Gk aiōn ‘age’.
'aeon' also found in these Oxford entries:
Archaean
- Cambrian
- eon
- era
- Lewisian
- Palaeozoic
- Phanerozoic
- Precambrian
- Proterozoic
- Torridonian
