OGDOAD
eight, VIII, eighter, eighter from Decatur, octad, ogdoad, octonary, octet
(noun) the cardinal number that is the sum of seven and one
Source: WordNet® 3.1
Etymology
Noun
ogdoad (plural ogdoads)
A thing made up of eight parts.
Etymology
Proper noun
Ogdoad
The group of eight primordial deities worshipped at Hermopolis in Ancient Egyptian times: Naunet and Nu, Amaunet and Amun, Kauket and Kuk, and Hauhet and Huh.
Source: Wiktionary
Og"do*ad, n. Etym: [Gr. , , from
Definition: A thing made up of eight parts. Milman.
Source: Webster’s Unabridged Dictionary 1913 Edition