The megisitruon is equal to megisiduon in a circle, using circle notation. In the Hyper-Moser notation megisitruon is equal to M(Megisiduon,3). The term was coined by Aarex Tiaokhiao. In the up-arrow notation, megisitruon is between \(2 \uparrow^{4} 5\) and \(2 \uparrow^{4} 6\)