variometer /vā-ri-omˈə-tər/

1. An instrument for comparing magnetic forces
2. A variable inductor composed of two connected coils, one rotating inside the other (electronics)
3. An instrument that indicates by a needle the rate of climb and descent (aeronautics)

• efficiency
• efficiency apartment
• efficiency apartments
• efficiency bar
• efficiency bars
• efficient
• efficient cause
• efficiently
• efficients
• effierce
• effierced
• effierces
• effiercing
• effigies
• effigurate
• effiguration
• effigurations
• effigy
• effing and blinding
• effleurage
• effleurages
• effloresce
• effloresced
• efflorescence
• efflorescences