perimeter

Noun
  1. The boundary line or the area immediately inside the boundary (synset 113926393)
    is a type of: bound, boundary, edge - a line determining the limits of an area
    subtypes: lip - either the outer margin or the inner margin of the aperture of a gastropod's shell
    same as: border, margin
  2. A line enclosing a plane areas (synset 113894091)
    is a type of: line - a length (straight or curved) without breadth or thickness; the trace of a moving point
  3. The size of something as given by the distance around it (synset 105108523)
    is a type of: size - the physical magnitude of something (how big it is)
    subtypes: girth - the distance around a person's body
    same as: circumference

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