Pneometer
Pne•om´e•ter, n. [Gr. to breathe + -meter.] (Physiol.) A spirometer. { Pneu•mat´ic, Pneu•mat´ic•al } a. [L. pneumaticus, Gr., fr.,, wind, air, to blow, breathe; cf. OHG. 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.
4. (Biol.) Fitted to contain air; Having cavities filled with air; as pneumatic cells; pneumatic bones. Pneumatic action, or Pneumatic lever (Mus.), a contrivance for overcoming the resistance of the keys and other movable parts in an organ, by causing compressed air from the wind chest to move them. — Pneumatic dispatch, a system of tubes, leading to various points, through which letters, packages, etc., are sent, by the flow and pressure of air. — Pneumatic elevator, a hoisting machine worked by compressed air. — Pneumatic pile, a tubular pile or cylinder of large diameter sunk by atmospheric pressure. — Pneumatic pump, an air-exhausting or forcing pump. — Pneumatic railway. See Atmospheric railway, under Atmospheric. — Pneumatic syringe, a stout tube closed at one end, and provided with a piston, for showing that the heat produced by compressing a gas will ignite substances. — Pneumatic trough, a trough, generally made of wood or sheet metal, having a perforated shelf, and used, when filled with water or mercury, for collecting gases in chemical operations. — Pneumatic tube. See Pneumatic dispatch, above.

Pneumatic
Pneu•mat´ic, n. A vehicle, as a bicycle, the wheels of which are fitted with pneumatic tires. { Pneu•mat´ic, Pneu•mat´ic•al }, a. Adapted for containing compressed air; inflated with air; as a pneumatic cushion; a pneumatic tire, a tire formed of an annular tube of flexible fabric, as India rubber, suitable for being inflated with air.

Pneumaticity
Pneu•ma•tic´i•ty, n. (Biol.) The state of being pneumatic, or of having a cavity or cavities filled with air; as the pneumaticity of the bones of birds.

Pneumatics
Pneu•mat´ics, n. [Cf. F. pneumatique.]
1. That branch of science which treats of the mechanical properties of air and other elastic fluids, as of their weight, pressure, elasticity, etc. See Mechanics.
2. (Philos. & Theol.) The scientific study or knowledge of spiritual beings and their relations to God, angels, and men.

Pneumato-
Pneu´ma•to- (nu"ma•to- or nu•mat"o-). A combining form from Gr. pney^ma, pney•matos, wind, air, breath, respiration; as pneumatograph, pneumatology. [1913 Webster]

Pneumatocele
Pneu•mat´o•cele, n. [ Pneumato- + Gr. a tumor; cf. F. pneumatocèle.] (Med.) A distention of the scrotum by air; also hernia of the lungs.

Pneumatocyst
Pneu•mat´o•cyst, n. [ Pneumato- + cyst.] (Zoöl.) A cyst or sac of a siphonophore, containing air, and serving as a float, as in Physalia.

Pneumatogarm
Pneu•mat´o•garm, n. [ Pneumato- + -gram.] (Physiol.) A tracing of the respiratory movements, obtained by a pneumatograph or stethograph.

Pneumatograph
Pneu•mat´o•graph, n. [ Pneumato- + -graph.] (Physiol.) An instrument for recording the movements of the thorax or chest wall during respiration; — also called stethograph.

Pneumatological
Pneu•ma•to•log´ic•al, a. [Cf. F. pneumatologique.] Of or pertaining to pneumatology.

Pneumatologist
Pneu•ma•tol´o•gist, n. [Cf. F. pneumatologiste.] One versed in pneumatology.

Pneumatology
Pneu•ma•tol´o•gy, n. [ Pneumato- + -logy: cf. F. pneumatologie.]
1. The doctrine of, or a treatise on, air and other elastic fluids. See Pneumatics, 1.
2. (Philos. & Theol.) The science of spiritual being or phenomena of any description.

Pneumatometer
Pneu•ma•tom´e•ter, n. [ Pneumato- + -meter.] (Physiol.) An instrument for measuring the amount of force exerted by the lungs in respiration.

Pneumatometry
Pneu•ma•tom´e•try, n. See Spirometry.

Pneumatophore
Pneu•mat´o•phore, n. [ Pneumato- + Gr. to bear.] (Zoöl.) One of the Pneumonophora.

Pneumatothorax
Pneu•ma•to•tho´rax, n. [ Pneumato- + thorax.] (Med.) See Pneumothorax.

Pneumo-
Pneu´mo- A combining form from Gr. pney•mwn, pney•monos, a lung; as pneumogastric, pneumology.

Pneumococcus
Pneu•mo•coc´cus, n. [See Pneumo-, and Coccus.] (Biol.) A form of micrococcus found in the sputum (and elsewhere) of persons suffering with pneumonia, and thought to be the cause of this disease.

Pneumogastric
Pneu•mo•gas´tric, a. [ Pneumo- + gastric.] (Anat.) Of or pertaining to the lungs and the stomach. — n. The pneumogastric nerve. Pneumogastric nerve (Anat.), one of the tenth pair of cranial nerves which are distributed to the pharynx, esophagus, larynx, lungs, heart, stomach, liver, and spleen, and, in fishes and many amphibia, to the branchial apparatus and also to the sides of the body.

Pneumograph
Pneu´mo•graph, n. Same as Pneumatograph.

Pneumography
Pneu•mog´ra•phy, n. [ Pneumo- + -graphy.] A description of the lungs. Dunglison.

Pneumology
Pneu•mol´o•gy, n. [ Pneumo- + -logy.] (Anat.) The science which treats of the lungs.

Pneumometer
Pneu•mom´e•ter, n. [ Pneumo- + -meter.] (Physiol.) A spirometer.

Pneumometry
Pneu•mom´e•try, n. Measurement of the capacity of the lungs for air. Dunglison.

Pneumonia
Pneu•mo´ni•a (nu•mo"ni•a), n. [NL., fr. Gr. pneymoni•a, fr. pney•mwn, pl. pney•mones the lungs, also pley•mwn, which is perh. the original form. Cf. Pneumatio, Pulmonary.] (Med.) Inflammation of the lungs. Catarrhal pneumonia, or Broncho- pneumonia, is inflammation of the lung tissue, associated with catarrh and with marked evidences of inflammation of bronchial membranes, often chronic; — also called lobular pneumonia, from its affecting single lobules at a time. — Croupous pneumonia, or ordinary pneumonia, is an acute affection characterized by sudden onset with a chill, high fever, rapid course, and sudden decline; — also called lobar pneumonia, from its affecting a whole lobe of the lung at once. See under Croupous. — Fibroid pneumonia is an inflammation of the interstitial connective tissue lying between the lobules of the lungs, and is very slow in its course, producing shrinking and atrophy of the lungs.

Pneumonic
Pneu•mon´ic, a. [Gr. : cf. F. pneumonique.] (a) Of or pertaining to the lungs; pulmonic. (b) Of or pertaining to pneumonia; as pneumonic symptoms.

Pneumonic
Pneu•mon´ic, n. (Med.) A medicine for affections of the lungs.

Pneumonitic
Pneu•mo•nit´ic, a. (Med.) Of or pertaining to pneumonitis.

Pneumonitis
Pneu•mo•ni´tis, n. [NL. See Pneumo-, and -itis.] (Med.) Inflammation of the lungs; pneumonia.

Pneumonometer
Pneu•mo•nom´e•ter, n. [See Pneumo-, and -meter.] (Physiol.) A spirometer; a pneumometer.

Pneumonophora
Pneu•mo•noph´o•ra, n. pl. [NL., fr. Gr. a lung + to bear.] (Zoöl.) The division of Siphonophora which includes the Physalia and allied genera; — called also Pneumatophorae.

Pneumony
Pneu´mo•ny, n. [Cf. F. pneumonie.] See Pneumonia.

Pneumoötoka
Pneu•mo•öt"o•ka, n. pl. [NL. See Pneumo-, and Oöticoid.] (Zoöl.) Same as Sauropsida.

Pneumophora
Pneu•moph´o•ra, n. pl. [NL. See Pneumonophora.] (Zoöl.) (Zoöl.) A division of holothurians having an internal gill, or respiratory tree.

Pneumoskeleton
Pneu•mo•skel´e•ton, n. [ Pneumo- + skeleton.] (Zoöl.) A chitinous structure which supports the gill in some invertebrates.

Pneumotherapy
Pneu•mo•ther´a•py, n. [Gr. air + therapy.] (Med.) The treatment of disease by inhalations of compressed or rarefied air.

Pneumothorax
Pneu•mo•tho´rax, n. [Gr. air + E. thorax.] (Med.) A condition in which air or other gas is present in the cavity of the chest; — called also pneumatothorax.

Pnigalion
Pni•ga´li•on, n. [NL., fr. Gr. nightmare, fr. to throttle.] (Med.) Nightmare.

Pnyx, n. [NL., fr. Gr. .] (Gr. Antiq.) The place at Athens where the meetings of the people were held for making decrees, etc.