I. briˈthänik adjective
Usage: usually capitalized
Etymology: Brython + -ic
1. : of, relating to, or characteristic of the Brythons
2. : of, relating to, or characteristic of the division of the Celtic languages that includes Welsh, Cornish, and Breton — compare goidelic
II. noun
( -s )
Usage: capitalized
: the Brythonic branch of the Celtic languages — see indo-european languages table