Top Definition
Mineral with unusual properties - Kliptonite is a strange formation of rock, found only around the site of a Klip appearance (see Klip). This complex mineral has varied and disturbing side effects which can enhance or debilitate superheros, especially those of the canine variety. Is commonly molded for use in weapons.
"The Klip wielded the Kliptonite enhanced Rocket Launcher with wild abandon."
by Morbius August 10, 2003

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