An angry verbal or physical confrontation takes place.

(ichthyology) A type of occular radiance, which is the redirection of infalling light from above, reflecting it into the visual field to illuminate the field of vision, for diurnal active photolocation.

Alternative form of spark arrestor

Sigmops bathyphilus, a species of bioluminescent deepwater fish that lives in the bathypelagic.

(idiomatic) The difference between the cost of the fuel required to produce a unit of electricity, and the price of that same unit of electricity.

The part of an internal combustion engine which forms a high-voltage electric spark which ignites the fuel-air mixture to begin the power stroke.

The sound produced, in an internal combustion engine, by the ignition of the fuel-air mixture before the piston reaches top dead centre

A gap, between two electrical terminals, across which sparks are generated. / Such a gap as a component of an engine's ignition system, especially that between the electrodes of a spark plug.

plural of spark arrestor

plural of sparking plug