Perimeter



GRE 蓝宝 Barron TOEFL

解释

GRE 红宝书

• n. 周长
• ［英］ n. 周长 ( the boundary of a closed plane figure or the length of it)
• ［记］ peri ( 周围) ＋meter ( 测量) -> 周长

Webster Collegiate

noun

• Etymology: Middle English perimetre, from Latin perimetros, from Greek, from peri- + metron measure — more at measure
• Date: 15th century
• 1.
  • a. the boundary of a closed plane figure
  • b. the length of a perimeter
• 2. a line or strip bounding or protecting an area
• 3. outer limits — often used in plural
• 4. the part of a basketball court outside the three-point line

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