A kind of pump in which the upstroke of the piston draws liquid, through an inlet valve, into the cylinder. On the downstroke, the liquid is discharged, through an outlet valve, into the outlet pipe.

plural of force pump

An emergency aircraft landing made under adverse circumstances, such as engine failure, fire, or adverse weather conditions, beyond the control of the pilot.

Air that is heated and directed through ducts, plenums, etc. to the rooms in a building, as a form of central heating.

plural of force diagram

Synonym of free body diagram

(physics, mechanics) Two forces acting at the same point with equal magnitude but opposite direction, resulting from Newton's third law ("every action has an equal and opposite reaction").

plural of force pair

present participle of force something down someone's throat

A feat demonstrating brilliance or mastery in a field.