Origin of octo
- Gr oktō- < oktō, eight
From Webster's New World College Dictionary, 5th Edition
- Greek okta-, oktō- (from oktō) Latin octō- (from octō) oktō(u) in Indo-European roots
From American Heritage Dictionary of the English Language, 5th Edition
- From Ancient Greek á½€ÎºÏ„ÏŽ (oktÅ, “eight") and Latin octÅ (“eight").