A.B.D
Arabic Bible Dictionary
CUBIT
CUBIT Hebrews ‘ammah; i.e., “mother of the arm,” the fore-arm, is a
word derived from the Latin cubitus, the lower arm. It is difficult to
determine the exact length of this measure, from the uncertainty whether it
included the entire length from the elbow to the tip of the longest finger, or
only from the elbow to the root of the hand at the wrist. The probability is
that the longer was the original cubit. The common computation as to the
length of the cubit makes it 20.24 inches for the ordinary cubit, and 21.888
inches for the sacred one. This is the same as the Egyptian measurements.
A rod or staff the measure of a cubit is called in Judges 3=>16 gomed, which
literally means a “cut,” something “cut off.” The LXX. and Vulgate render
it “span.”