PRESSURE n.
orce; a force in the nature of a thrust, distributed over a surface, often estimated with reference to the upon a unit's area. Atmospheric pressure, Center of pressure, etc. See under Atmospheric, Center, etc. -- Back pressure (Steam engine), pressure which resists the motion of the piston, as the pressure of exhaust…
PRIMITIVE a.
s of coördinate (Geom.), that system of axes to which the points of a magnitude are first referred, with reference to a second set or system, to which they are afterward referred. -- Primitive chord (Mus.), that chord, the lowest note of which is of the same literal denomination as the fundamental base of the harmony;…
PRUDENCE n.
ion; discretion; carefulness; hence, also, economy; frugality. Prudence is principally in reference to actions to be done, and due means, order, seasons, and method of doing or not doing. Sir M. Hale. Prudence supposes the value of the end to be assumed, and refers only to the adaptation of the means. It is the relatio…