Quintitetremar

Quintitetremar is equal to \(f_{\psi(M\uparrow\uparrow5)}(10)\). The term was coined by Denis Maksudov.

Etymology
The 3 parts of the name, "quinti", "tetr", and "emar", mean \(5\), \(\uparrow\uparrow\), and "M". So the full name indicates the ordinal index of the number.