Perimetry



[puh-rim-i-ter] /pəˈrɪm ɪ tər/

noun
1.
the border or outer boundary of a two-dimensional figure.
2.
the length of such a boundary.
3.
a line bounding or marking off an area.
4.
the outermost limits.
5.
Military. a fortified boundary that protects a troop position.
6.
Ophthalmology. an instrument for determining the peripheral field of vision.
/pəˈrɪmɪtə/
noun
1.
(maths)

2.

3.
a medical instrument for measuring the limits of the field of vision
n.

early 15c., “line around a figure or surface,” from Latin perimetros, from Greek perimetron “circumference,” from peri- “around” (see peri-) + metron “measure” (see meter (n.2)). Military sense of “boundary of a defended position” is attested from 1943.

perimetry pe·rim·e·try (pə-rĭm’ĭ-trē)
n.
The determination of the limits of the visual field.

perimeter pe·rim·e·ter (pə-rĭm’ĭ-tər)
n.

perimeter
(pə-rĭm’ĭ-tər)

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