(mechanics) A parallelogram, two adjacent sides of which are vectors having the same initial point and representing two forces acting simultaneously upon this point, such that the resultant of the forces is given by the diagonal of the parallelogram that passes through this point.

(physics) Any of the fundamental forces that act between elementary particles; each one is associated with an exchanged particle.

A branch of the military mainly devoted to air warfare, as opposed to (land) army and navy. / A unit in the U.S. Air Force larger than a division but smaller than a command.

(electromagnetism) the force exerted on a charged particle in an electromagnetic field

(physics) The force on a rotating or orbiting body in the direction of the centre of rotation.

A unit of force equal to a mass of one avoirdupois pound times a standard acceleration of gravity, equal to about 4.44822 newtons. Symbol lbf or lb_f.

a temporary group of military units brought together, under a single commander, to accomplish a specific objective / (by extension) a similar group of individuals assigned a task

(physics) the force associated with a magnetic field and that produces magnetic flux; it is the work required to carry a magnetic monopole of unit strength once round a magnetic circuit; measured in ampere-turns

(physics) Potential energy (not force) divided by electric charge; measured in volts

The military forces of a nation, such as the army, navy, air force, marines, and sometimes, coastguard or border guard, which are tasked with the defence of the nation and its citizens, if necessary through use of deadly force.