perimeter

Từ điển WordNet v3.1 - WordNet Dictionary

noun

1. a line enclosing a plane areas
• Hypernyms:
line
2. the size of something as given by the distance around it
• Syn:
circumference
• Hypernyms:
size
• Hyponyms:
girth
3. the boundary line or the area immediately inside the boundary
• Syn:
margin, border
• Derivationally related forms:
border (for: border), marginal (for: margin)
• Hypernyms:
boundary, edge, bound
• Hyponyms:
lip

• Từ đồng nghĩa / Synonyms:
  circumference, margin, border