different between boundary vs perimeter

English

Etymology

bound +? -ary, Old French, from Latin.

Pronunciation

• (UK) IPA^(key): /?ba?nd?i/
• (US) IPA^(key): /?ba?nd??i/
• Rhymes: -a?nd?i

Noun

boundary (plural boundaries)

1. The dividing line or location between two areas.

   • So this was my future home, I thought! […] Backed by towering hills, the but faintly discernible purple line of the French boundary off to the southwest, a sky of palest Gobelin flecked with fat, fleecy little clouds, it in truth looked a dear little city; the city of one's dreams.

2. (figuratively, often in the plural) The bounds, confines, or limits between immaterial things (such as one’s comfort zone, privacy, or professional sphere and the realm beyond).

3. (cricket) An edge or line marking an edge of the playing field.
4. (cricket) An event whereby the ball is struck and either touches or passes over a boundary (with or without bouncing), usually resulting in an award of 4 (four) or 6 (six) runs respectively for the batting team.
5. (topology) (of a set) The set of points in the closure of a set ${\displaystyle S}$, not belonging to the interior of that set.

Derived terms

• Boundary County
• boundary rider
• boundary umpire

Related terms

• bound

Translations

See also

• border
• confine
• frontier
• fladry

Further reading

• boundary in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.
• boundary in The Century Dictionary, New York, N.Y.: The Century Co., 1911.

English

Etymology

Late Middle English: via Latin from Greek perimetros, based on peri- ‘around’ + metron ‘measure’. From Ancient Greek ?????????? (perímetros).

Pronunciation

• (UK, US) enPR: p?r?m'?t?r, IPA^(key): /p????m?t?(?)/
• Rhymes: -?m?t?(?)

Noun

perimeter (plural perimeters)

1. (mathematics) The sum of the distance of all the lengths of the sides of an object.
2. (mathematics) The length of such a boundary.
3. The outer limits of an area. See synonyms at circumference.
4. A fortified strip or boundary usually protecting a military position.
5. An instrument for determining the extent and shape of the field of vision.

Synonyms

• (mathematics): circumference

Translations

Synonyms

• (given grounds): premises

Related terms

• perimeter fence
• perimetric, perimetrical
• perimetrically

Anagrams

• peritreme