(bacteriology, of a bacterium) That stains dark blue or violet after Gram staining, due to large quantities of peptidoglycan in the cell wall.

plural of position paper

A glowing region in a glow discharge between the Faraday dark space and the anode glow.

plural of positive column

(game theory) Pertaining to a game or situation where overall benefits to all participants can increase.

A notation for numbers in which the value of a digit depends on its position in the string, examples of which include the decimal system and the binary system

(dated) Gothic rock.

plural of juxta-position

Obsolete spelling of juxtaposition

(biology) The applied science of selecting positive or desirable traits in a species.