What does caeliscalpium mean in Latin?

caeliscalpium, a noun, means “skyscraper”.

What is the genitive of caeliscalpium?

The genitive singular is caeliscalpiī. caeliscalpium is neuter, second declension.

In classical Latin, [kae̯.lɪsˈkaɫ.pi.ũː]; in ecclesiastical (church) Latin, [t͡ʃe.lisˈkal.pi.um].

noun · neutersecond declension

caeliscalpium n (genitive caeliscalpiī)

Classical[kae̯.lɪsˈkaɫ.pi.ũː]Ecclesiastical[t͡ʃe.lisˈkal.pi.um]

neuterskyscraper
Audivimus nuper in Britannia duo caeliscalpia dirui decretum esse, non quod deformi metallorum et vitri pondere veterem loci maiestatem turparent (notum est Britannos parum de architectura intellegere), sed quia tantae molis tutela et conservatio nimis magno civitati constabat.We've heard that recently in Great Britain, they decided to demolish two skyscrapers, not because they spoiled the area's former majesty with an unattractive amount of metal and glass (Britons are notoriously ignorant about architecture), but because the care and conservation of such a massive structure cost too much to the city.2002, Latinitas, volume 50, page 34:

Calque of English skyscraper, from caelum (“sky”) + scalpō (“to scratch”) + -ium.