Schub

Schub is a German noun with several related meanings. In ordinary language, it denotes a push or shove, the act of applying force to move something. It is also used for the propulsion force of a machine, especially an engine, and in this sense is synonymous with thrust.

Etymology: The term derives from the Germanic verb schieben, meaning to push. The noun form developed to describe impulse, momentum, or impetus, and it appears in compounds such as Schubkraft (thrust force) and Schubrichtung (direction of thrust).

In engineering and physics, Schub refers to the thrust produced by an engine or propulsion system, notably in aviation and rocketry. It is the force along the engine’s longitudinal axis and is a key parameter for performance, often expressed in newtons or kilonewtons. Different propulsion stages or configurations can affect Schub.

In medicine, Schub denotes a relapse or flare of symptoms in chronic illnesses, most commonly multiple sclerosis. It represents a sudden worsening of neurological function that persists for some time and requires clinical evaluation to guide treatment decisions.

Other uses include colloquial and metaphorical senses, where Schub describes a rise in momentum or impetus. For example, one can Sprach “einen Schub geben” (to give something a push or boost), or describe a burst of speed as a Schub in sports commentary. Overall, Schub conveys the idea of push, propulsion, or a notable surge in activity.