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

• harpooners
• harpoon-gun
• harpoon-guns
• harpooning
• harpoons
• harps
• harp seal
• harp seals
• harp-shell
• harp-shells
• harpsichord
• harpsichordist
• harpsichordists
• harpsichords
• harpy
• harpy eagle
• harpy eagles
• harquebus
• harquebuse
• harquebuses
• harquebuss
• harquebusses
• harridan
• harridans
• harried