pentachord /penˈtə-körd/ (music)

1. A musical instrument with five strings
2. A diatonic series of five notes

• exterminations
• exterminative
• exterminator
• exterminators
• exterminatory
• extermine
• extermined
• extermines
• extermining
• extern
• external
• external-combustion engine
• external-combustion engines
• external degree
• external examination
• external examinations
• external examiner
• external examiners
• externalisation
• externalise
• externalised
• externalises
• externalising
• externalism
• externalisms