What does Rīsinium mean in Latin?

Rīsinium, a proper noun, means “Risan”.

What is the genitive of Rīsinium?

The genitive singular is Rīsiniī. Rīsinium is neuter, second declension.

proper noun · neutersecond declension

Rīsinium n sg (genitive Rīsiniī or Rīsinī)

Contraction of earlier Rhīzinium, from Ancient Greek Ῥίζων (Rhízōn).

What does Rīsinium mean in Latin?: Rīsinium, a proper noun, means “Risan”.
What is the genitive of Rīsinium?: The genitive singular is Rīsiniī. Rīsinium is neuter, second declension.