[ pə'rɪmɪtə ]
■ noun
1》 the continuous line forming the boundary of a closed geometrical figure.
2》 the outermost parts or boundary of an area or object.
3》 Basketball an area away from the basket, beyond the reach of the defensive team.
4》 an instrument for measuring the extent and characteristics of a person's field of vision.
Derivatives
perimetric adjective
perimetry noun
Origin
ME: via L. from Gk perimetros , based on peri- 'around' + metron 'measure'.