Aaronic

adjective

of or relating to Aaron (the brother of Moses)

Wiktionary

Pronunciation: /æɹˈɒn.ɪk/ / /ɛːˈɹɒn.ɪk/ / /æɹˈɑn.ɪk/

adj

Etymology: Etymology tree English Aaron Proto-Indo-European *-ikos Proto-Italic *-ikos Latin -icuslbor. Old French -iquebor. Middle English -ik English -ic English Aaronic From Aaron + -ic.

Pertaining to Aaron (elder brother of Moses).
Pertaining to or characteristic of a high priest; priestly.
Of or pertaining to the lower order of priests.