4 occurrences in 4 dictionaries
Reference: Aaronites
American
Descendants of Aaron the high priest, so called 1Ch 12:27; 27:17. Thirteen cities were assigned to them, in Judah and Benjamin, Jos 21:13-19; 1Ch 6:57-60.
Easton
the descendants of Aaron, and therefore priests. Jehoiada, the father of Benaiah, led 3,700 Aaronites as "fighting men" to the support of David at Hebron (1Ch 12:27). Eleazar (Nu 3:32), and at a later period Zadok (1Ch 27:17), was their chief.