(advertising) One of four archetypal dramatic structures of commercials, characterized by an emotionally neutral beginning with an enormous leap in positive emotions generated by seeing the branded product in use.

(medicine, bacteriology, of a bacterium) That is stained violet by Gram's method

Infected by HIV.

(law) Law explicitly made, as compared to natural law, prescribed by express enactment or institution.

plural of positive law

The giving of encouragement to a person who exhibits a particular behaviour with the result that such behaviour is repeated.

(electronics) The point in time when a signal's value becomes high.

(economics) The branch of economics that concerns the description and explanation of economic phenomena and their causal relationships

(construction) the drainage condition in which consideration has been made during design for all loading deflections of the deck and additional roof slope has been provided to ensure drainage within 48 hours following rainfall during conditions conducive to drying.

plural of false positive