"Nova Derivativa Verba Latina, Pars Quadringentesima Undecima"
"New Latin Derivatives, Part Four Hundred Eleven"
Yeah:
extramen -minis n. "instrument that goes out"
[extrare "to go out" + -men suffix indicating an instrument]
[extra- + -min-] stems
[extramin-] new stem
[extramen] nominative singular