名詞 octonary:

1. the cardinal number that is the sum of seven and one
   同義詞：eight, 8, VIII, eighter, eighter from Decatur, octad, ogdoad, octet

oc.to.nar.y

adj.（形容詞）
Of or relating to the number eight.
八的或與八有關的
Consisting of eight members or of groups containing eight.
含有八個成員的或八個一組的
n.（名詞）
【復數(shù)】 oc.to.nar.ies
A group or set of eight.
八個一組或一套

來源：
Latin octôn3rius [containing eight]
拉丁語 octôn3rius [含有八]
from octôno [eight each]
源自 octôno [每一個八]
from octô [eight] * see oktô(u)
源自 octô [八] *參見 oktô(u)