penstock /penˈstok/

1. A sluice
2. (in a hydroelectric or other plant) a valve-controlled water conduit

• electrometry
• electromotance
• electromotive
• electromotive force
• electromotor
• electromotors
• electromyogram
• electromyograms
• electromyograph
• electromyographic
• electromyographically
• electromyographs
• electromyography
• electron
• electron beam
• electron beams
• electron camera
• electron cameras
• electron capture
• electron diffraction
• electronegative
• electronegativity
• electron gun
• electron guns
• electronic