trisagion /tri-sagˈi-on/

1. An ancient hymn consisting of the words ‘O Holy God, holy and mighty, holy and immortal, have mercy on us’
2. Loosely, the Tersanctus

• birdwings
• bird-witted
• birefringence
• birefringences
• birefringent
• bireme
• biremes
• biretta
• birettas
• biriani
• birianis
• biriyani
• biriyanis
• birk
• birken
• birkie
• birkier
• birkies
• birkiest
• birks
• birl
• birle
• birled
• birler
• birlers