quinarian
/kwɪˈnɛːrɪən/ /kwʌɪˈnɛːrɪən/adjective
Zoology. Designating, relating to, or advocating a system of classification based on quinary division. Now historical.
noun
An advocate of the quinary system of classification. Now historical.
Origin
Mid 18th century (in an earlier sense). From classical Latin quīnārius + -an.