| 单词 | perimeter |
| 释义 | Word Frequency perimeter(pəˈrɪmɪtə) noun 1. mathematics a. the curve or line enclosing a plane area b. the length of this curve or line 2. a. any boundary around something, such as a field b. (as modifier) a perimeter fence a perimeter patrol 3. a medical instrument for measuring the limits of the field of vision Derived forms perimetric (ˌpɛrɪˈmɛtrɪk), perimetrical (ˌperiˈmetrical) or perimetral (peˈrimetral) adjective perimetrically (ˌperiˈmetrically) adverb perimetry (peˈrimetry) noun Word origin C16: from French périmètre, from Latin perimetros; see peri-, -meter |
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