Strong’s Greek
G5068 — tetragonos
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
τετράγωνος
tetragonos — pronounced tet-rag'-o-nos
from 5064 and 1137; four-cornered, i.e. square:--foursquare. see GREEK for 5064 see GREEK for 1137
1 occurrence in the KJV.
Revelation 21:16
And the city lieth foursquare, 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.