PNEUMOGASTRIC a.
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.
POST n.
al superintendence, where letters, papers, and other mailable matter, are received and distributed; a place appointed for attending to all business connected with the mail. (b) The governmental system for forwarding mail matter. -- Postoffice order. See Money order, under Money. -- Post road, or Post route, a road or…
PRESSURE n.
of a force against some obstacle or opposing force; 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 mot…