1. 1  the region below the lithosphere, variously estimated as being from fifty to several hundred miles (eighty-five to several hundred kilometers) thick, in which the rock is less rigid than that above and below but rigid enough to transmit transverse seismic waves.
Operationalization is sometimes used to specifically refer to the scientific practice of operationally defining, where even the most basic concepts are defined through the operations by which we measure them. This comes from the work of Percy Williams Bridgman, whose methodological position is called operationalism.
Operations research. Written By: Operations research, also called operational research, application of scientific methods to the management and administration of organized military, governmental, commercial, and industrial processes.