[τετράγωνος] from G5064 and G1137; four-cornered, i.e. square
Usages throughout the bible
Revelation 21:16
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And the city lieth foursquare, G5068 and the length is as large as the breadth: and he measured the city with the reed, twelve thousand furlongs. The length and the breadth and the height of it are equal.