PLYGHT
Plyght, v. & n.
Defn: See Plight. [Obs.] Chaucer.
PLYMOUTH BRETHREN
Plym"outh Breth"ren.
Defn: The members of a religious sect which first appeared at Plymouth, England, about 1830. They protest against sectarianism, and reject all official ministry or clergy. Also called Brethren, Christian Brethren, Plymouthists, etc. The Darbyites are a division of the Brethren.
PNEOMETER
Pne*om"e*ter, n. Etym: [Gr. -meter.] (Physiol.)
Defn: A spirometer.
PNEUMATIC; PNEUMATICAL Pneu*mat"ic, Pneu*mat"ic*al, a. Etym: [L. pneumaticus, Gr. fnehan: cf. F. pneumatique. Cf. Pneumonia.]
1. Consisting of, or resembling, air; having the properties of an elastic fluid; gaseous; opposed to dense or solid. The pneumatical substance being, in some bodies, the native spirit of the body. Bacon.
2. Of or pertaining to air, or to elastic fluids or their properties; pertaining to pneumatics; as, pneumatic experiments. "Pneumatical discoveries." Stewart.
3. Moved or worked by pressure or flow of air; as, a pneumatic instrument; a pneumatic engine.