Webster's Revised Unabridged Dictionary · 1913

Quinary

Quinary , adjective

[Latin quinarius, from quini five each, akin to quinque five: compare French quinaire. See Five.]

Consisting of five; arranged by fives. — Boyle
Collocations (1)
Quinary system (Zoology) , a fanciful classification based on the hypothesis that each group contains five types.