Quadrinemar

Quadrinemar is equal to \(f_{\psi(M_{M_{M_{M_M}}})}(10)\). The term was coined by Denis Maksudov.

Etymology
The 3 parts of the name, "quadri", "in", and "emar", mean \(4\), "in-" operation, and \(M\). So the full name indicates the ordinal index of the number.