Prehistoric krypton Synonyms

Prehistoric replaced

Definitions for Prehistoric


  • (adjective) having passed its time of use or usefulness
  • (adjective) belonging to or existing in times before recorded history
  • (adjective) of or relating to times before written history

Synonyms for phrase

PK abbreviation

PK is an abbreviation for Prehistoric Krypton
What does PK stand for?
PK stands for "Prehistoric Krypton"

Krypton replaced

Definitions for Krypton


  • (noun) a colorless element that is one of the six inert gasses; occurs in trace amounts in air