- The definition of a Greek cross is a symbol with two bars that bisect at right angles making four equal length arms.
An example of a Greek cross is the symbol used to represent the Red Cross aid agency.
A Greek cross on top of a church.
Greek cross definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
a cross with four equal arms at right angles
Greek cross definition by American Heritage Dictionary
A cross formed by two bars of equal length crossing in the middle at right angles to each other.