section_path: Terminology
section_name: Terminology
paragraph_text: Terminology
  
  The English word wheel comes from the Old English word hwēol, from Proto-Germanic * hwehwlaz, from Proto-Indo-European * k ék los, an extended form of the root * k el- ' to revolve, move around '. Cognates within Indo-European include Icelandic hjól ' wheel, tyre ', Greek κύκλος kúklos, and Sanskrit chakra, the last two both meaning ' circle ' or ' wheel '.