PERIMETER /pəˈɹɪmɪtə(ɹ)/ Scrabble 13 Words With Friends 15 Definition noun the boundary line or the area immediately inside the boundary. — synonyms: margin, border noun a line enclosing a plane areas. noun the size of something as given by the distance around it. — synonyms: circumference See all 117 words you can make from PERIMETER → 9-letter words Words starting with P Words ending with R ← Unscramble different letters