quadrilateral

Meanings

1. 1
   noun

   An area defended by four fortresses supporting each other.

   The Venetian quadrilateral comprised Mantua, Peschiera, Verona, and Legnano.

2. 2
   adj

   having four sides

3. 3
   noun

   a four-sided polygon

4. 4
   noun

   A polygon with four sides.

Learned borrowing from Latin quadrilaterus + -al.

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