Nova Derivativa Verba Latina, Pars Tricentesima Quinquagesima

[diaphanus]

"Nova Derivativa Verba Latina, Pars Tricentesima Quinquagesima"
"New Latin Derivatives, Part Three Hundred Fifty"

Yes:

fultrum -i n. "something that supports"
[fulcire "to support" + -trum agent noun suffix]
[fulci- + -tro-] stems
[FULC- + -tro-] root and stems
[FUL- + -tro-] C disappears before t
[fultro-] new stem
[fultrum] nominative singular