(geography) A dry valley once occupied by a stream or river, since captured by another stream.

plural of gap year

(rail transport) Be careful of the gap between the vehicle and the platform it is near, in boarding or alighting; wide gaps between train and platform are caused by curved tracks and platforms in some stations.

(genetics) A flaw in the DNA.

A yearlong break from study taken by some students on leaving school before starting university, often spent gaining work experience or travelling.

(chiefly British spelling) Alternative form of stopgap

(chiefly British spelling) Alternative form of stopgap

(chiefly British spelling) Alternative form of stopgap

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.

(biology) A specialized connection between cells that allows for intercellular communication, or the transfer of low molecular-weight substances