trilogy /trilˈə-ji/

1. Any group of three works, such as novels, plays, etc
2. A group of three related Greek tragedies, orig performed together
3. A triad

• electroplatings
• electropolar
• electro-pop
• electropositive
• electrorheological
• electros
• electroscope
• electroscopes
• electroscopic
• electroshock
• electroshocks
• electrosmog
• electrosonde
• electrosondes
• electrospinning
• electrostatic
• electrostatically
• electrostatics
• electrostatic unit
• electrotechnic
• electrotechnical
• electrotechnics
• electrotechnology
• electrotherapeutic
• electrotherapeutical