PERI VOCAB

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

travelling about; itinerant

peripheral

1. on the periphery (outside boundary); outside or away from the central part, as in peripheral vision
2. only slightly connected with what is essential; merely incidental

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 peritoneum (membrane lining the abdominal cavity and surrounding the organs within it)

peri

"around," "about," "near," "enclosing"

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