That is when a unit increase in the variable input causes total product to fall.

In other words, how much does Y increase (or decrease) for every unit increase of X?

It may be defined as the amount by which national income of a nation will be raised by a unit increase in domestic investment on exports.

In a proportional hazards model, the unique effect of a unit increase in a covariate is multiplicative with respect to the hazard rate.

In 2011, the average sales price was approximately $283,000 with a sales volume exceeding $126 million, a 45% unit increase compared to 2010.

Expansion saw the unit increase to 1450 men during World War II.

A unit increase in the oral hygiene index was associated with a 1.12-fold increased risk of coronary heart disease in younger men.

It is the rate of increase of wind strength with unit increase in height above ground level.

It measures the reduction in one input per unit increase in the other input that is just sufficient to maintain a constant level of production.

It is also, less importantly, a measure of ground motion, with each unit increase representing a tenfold increase in motion.