1. quinary - Noun
2. quinary - Adjective
Consisting of five; arranged by fives.
Source: Webster's dictionary5: quinary main Quinary systems are based on the number 5. It is almost certain the quinary system developed from counting by fingers (five fingers per hand). Source: Internet
London: Meuthen several writers have speculated that the 5th century Irish Ogham script, with its quinary alphabet system, was derived from a finger alphabet that predates even Bede. Source: Internet
Some authors add quaternary (knowledge) or even quinary (culture and research) sectors. Source: Internet