MUHARRIK (ar. ba harakat oranda), moshini quvvagiest, ki yagon namudi energiyaro ba kori mekhaniki tabdil medihad. Muharrik vobasta ba navhoi khud kori mekhanikiro az rotori charkhzananda, az harakati peshravandayu bargardandai porshen yo az apparati reaktivi girifta metavonad. Muharrik moshinhoi kori, vositahoi naqliyoti khushkigardu obi, havoivu kayhoni, dastgohhoi istehsolivu tekhnologi, asbobhoi kommunalivu ruzgor va gayraro ba harakat meovarad.
Muharrikhoe, ki zakhirahoi tabiii energetiki (suzishvori, energiyai bod, ob va gayra)-ro bevosita ba energiyai mekhaniki tabdil medihand, muharrikhoi a v v a l nomida meshavand. Guruhi kaloni Muharrikhoi avvalro muharrikhoi harorati tashkil medihand. Muharrikhoe, ki energiyai muharrikhoi avvalro ba kori mekhaniki tabdil medihand, Muharrikhoi soni nom dorand (masalan, Muharrikhoi elektrii pnevmati, baze navhoi Muharrikhoi gidravliki va gayra) Muharrikho vobasta ba tainotashon statsionari, sayyor, naqliyoti meshavand. Doir ba tarikhi inkishof va iqtidori Muharrikhoi hozirazamon nig. maqolai Muharriki darunsus, Muharriki aviatsioni, Muharriki raketi va gayra.