What is "zener"

Zener can refer to:

• Zener diode, a type of electronic diode
• Zener effect, a type of electrical breakdown which is employed in a Zener diode
• Zener pinning, the influence of a dispersion of fine particles on the movement of low- and high angle grain boundaries through a polycrystalline material
• Clarence Zener, the American physicist after whom the diode, effect and pinning are named

or:

• Zener cards, cards used to conduct experiments for extra-sensory perception
• Karl Zener, the American psychologist after whom the cards are named