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Amsco Vocab Chp. 4 - Section 25. PERI: "around," "about," "near," "enclosing"

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pericardium
membranous sac enclosing the heart
perigee
nearest point to the earth in the orbit of a heavenly body
perihelion
nearest point to the sun in the orbit of a heavenly body
perimeter
whole outer boundary or measurement of a surface or figure
periodontics
branch of dentistry dealing with diseases of the bone and gum tissues supporting the teeth
peripatetic
traveling about; itinerant
peripheral
adj. 1. on the outside boundary; outside or away from the central part - 2. only slightly connected with what is essential; merely incidental
peripheral
n. device that can be attached to or used with a computer, such as a keyboard, monitor, printer, or scanner
periphrastic
expressed in a roundabout way; circumlocutory
periscope
instrument permitting those in a submarine a view ("look around") of the surface
peristalsis
wavelike contraction of the walls of the intestines, which propels contents onward
peristyle
1. row of columns around a building or court - 2. the space so enclosed
peritonitis
inflammation of the membrane lining the abdominal cavity and surrounding the organs within it