(economics) The observation that the rate of interest and the general level of prices are positively correlated.

Alternative form of parade of horribles.

plural of parabolic comet

plural of parallel gill trama

plural of parasitic drag

(physics) A type of aerodynamic drag that acts on any object when the object is moving through a fluid.

A form of play involving two or more children doing an activity in the same room but without paying attention to one another. Primarily seen among children between the age of 6 months up to late preschool.

plural of parallel dead space

Synonym of alveolar dead space

(physics) A dimensionless quantity, denoted by η, used in nuclear astrophysics in the calculation of reaction rates between two nuclei and in the definition of the astrophysical S-factor.