octonaryoctonary means of eighth rank or order. Lexicurio rates it Rare gem — a strength score of 73 out of 100.EtymologyFrom the Latin octōnārius (“containing eight”), from octōnī (“eight at a time”, “by eights”, “eight each”) + -ārius (whence the English suffix -ary).adjOf eighth rank or order.Consisting of eight thingsnounA group of eight things