What does alysson mean in Latin?

alysson, a noun, means “alyssum”.

What is the genitive of alysson?

The genitive singular is alyssī. alysson is neuter, second declension.

In classical Latin, [aˈlys.sɔn]; in ecclesiastical (church) Latin, [aˈlis.son].

noun · neutersecond declension

alysson n (genitive alyssī)

Classical[aˈlys.sɔn]Ecclesiastical[aˈlis.son]

ălyssŏn, i, n. ἄλυσσος, curing (canine) madness,

I. a plant used for the bite of a mad dog, madwort, Plin. 24, 11, 57, § 95.

Borrowed from Ancient Greek ἄλυσσον (álusson).