Pa the derived SI unit of pressure; the pressure exerted on an area of 1 square metre by a force of 1 newton; equivalent to 10 dynes per square centimetre or 1.45 × 10^{--4} pound per square inch
[C20: named after Blaise Pascal]
Pascal^{1} (French paskal)
—n
Blaise (blɛz). 1623--62, French philosopher, mathematician, and physicist. As a scientist, he made important contributions to hydraulics and the study of atmospheric pressure and, with Fermat, developed the theory of probability. His chief philosophical works are Lettres provinciales (1656--57), written in defence of Jansenism and against the Jesuits, and Pensées (1670), fragments of a Christian apologia
Pascal^{2} (ˈpæsˌkæl, -k^{ə}l)
—n
a high-level computer programming language developed as a teaching language: used for general-purpose programming