Kryptonite is a fictional material that appears primarily in Superman stories published by DC Comics. In its best-known form, it is a green, crystalline material originating from Superman's …

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Kryptonite is the name given to shards of matter that were cast off from the planet Krypton after its destruction.

The meaning of KRYPTONITE is a substance that causes the comic-book character Superman to become weak when he is exposed to it—often used to describe something likened to …

Aug 11, 2025 · Kryptonite is an irradiated piece of crystal from Superman's homeworld that causes physiological changes to any Kryptonian in close proximity.

Oct 9, 2023 · Kryptonite is a radioactive ore from Superman's home world, Krypton. Kryptonite usually only affects Kryptonians, and it's one of the only things in DC that can weaken …

4 days ago · Superman’s pink kryptonite and the effect it has on his is infamous, but DC Comics is stepping in to say that it’s not actually a real thing.

Jul 18, 2025 · Kryptonite is a fictional mineral from Superman’s home planet, Krypton. When Krypton exploded, radioactive fragments of the planet were scattered across space. These …

Kryptonite is a fictional element in the DC Comics universe, and one of the few items that can harm Superman, his cousin Supergirl, and his dog Krypto. It is depicted as a radioactive …

Kryptonite is a fictional substance from the Superman comic book series (and subsequent related media). The material, usually shown as having been created from the irradiated remains of …