Qeexida qaamuuska ereyga "reneactor" waa:Magac: qof ka qaybqaata dib-u-dhaqaajinta, taas oo ah madadaalo taariikheed ama matalaad dhacdo ama xilli hore, sida caadiga ah ku lug leh isticmaalka dharka, agabka, iyo agabka kale si loo abuuro waayo-aragnimo dhab ah. Dib-u-hawlgalayaashu waxay inta badan ku dadaalaan inay si sax ah u muujiyaan tirooyinka taariikhiga ah, waxqabadyada, iyo qaybaha dhaqameed ee muddada la soo bandhigayo, waxaana laga yaabaa inay ka tirsan yihiin kooxo ama bulshooyin abaabulan oo u heellan hawshan.