Britannic

[bri-tan-ik] /brɪˈtæn ɪk/
adjective
1.
of Britain; British:
Her Britannic Majesty.
2.
noun
3.
Origin
1635-45; < Latin Britannicus. See Britannia, -ic
British Dictionary definitions for Britannic

Britannic

/brɪˈtænɪk/
adjective
1.
of Britain; British (esp in the phrases His or Her Britannic Majesty)
Word Origin and History for Britannic
adj.

1640s, from Latin Britannicus (see Britain).