In the broadest sense, mechanochemistry is defined as chemical synthesis induced by external mechanical energy such as grinding two solids using a mortar-and-pestle, ball-mill, or shaker!
Mechanochemistry (or mechanical chemistry) is the initiation of chemical reactions by mechanical phenomena. Mechanochemistry thus represents a fourth way to cause chemical reactions, complementing thermal reactions in fluids, photochemistry, and electrochemistry.
Conventionally mechanochemistry focuses on the transformations of covalent bonds by mechanical force.
