trigram /trīˈgram/

1. An inscription of three letters
2. A figure of three lines

trigrammatˈic or trigrammˈic adjective

• omnibus boxes
• omnibus clause
• omnibus clauses
• omnibus edition
• omnibus editions
• omnibuses
• omnibus train
• omnibus trains
• omnicompetence
• omnicompetences
• omnicompetent
• omnidirectional
• omnidirectionality
• omnidirectionally
• omnieties
• omniety
• omnifarious
• omnifariously
• omnifariousness
• omniferous
• omnific
• omnificence
• omnificent
• omnified
• omnifies