- - dynamic f. SYN: energy.- electromotive f. (EMF) the f. (measured in volts) that causes the flow of electricity from one point to another.- G f. inertial f. produced by accelerations or gravity, expressed in gravitational units; one G is equal to the pull of gravity at the earth's surface at sea level and 45° North latitude (32.1725 ft/sec2; 980.621 cm/sec2). SEE ALSO: g.- f. of mastication the motive f. created by the dynamic action of the muscles during the physiologic act of mastication. SYN: biting strength, chewing f., masticatory f..- reciprocal forces in dentistry, forces whereby the resistance of one or more teeth is utilized to move one or more opposing teeth.- reserve f. the energy residing in the organism or any of its parts above that required for its normal functioning.- van der Waals forces first postulated by van der Waals in 1873 to explain deviations from ideal gas behavior seen in real gases; the attractive forces between atoms or molecules other than electrostatic (ionic), covalent (sharing of electrons), or hydrogen bonding (sharing a proton); generally ascribed to dipolar and dispersion effects, π-electrons, etc.; these relatively nondescript forces contribute to the mutual attraction of organic molecules.
* * *force 'fō(ə)rs, 'fȯ(ə)rs n an agency or influence that if applied to a free body results chiefly in an acceleration of the body and sometimes in elastic deformation and other effects
* * *(fors) [L. fortis strong] any influence that acts to change the motion of an object, either accelerating or decelerating it, including changes in direction of motion. Symbol F>.
Medical dictionary. 2011.