LATIN DICTIONARYLexicon Latīnum
noun · neutersecond declension

epithymum

epithymum n (genitive epithymī)

Meaning

  1. neuterepithyme, dodder parasite plant that affects thyme
    Epithymum Graecum nomen, quod Latine dicitur flos thymi; nam flos Graece θύμον vocatur. "Epithymum" is a Greek name (called "the thyme flower" in Latin) as the plant is called thýmon in Greek.c. 625 CE, Isidore of Seville, Etymologies 17.9.13

Origins

Borrowed from Ancient Greek ἐπίθυμον (epíthumon).

Quick answers

What does epithymum mean in Latin?
epithymum, a noun, means “epithyme, dodder parasite plant that affects thyme”.
What is the genitive of epithymum?
The genitive singular is epithymī. epithymum is neuter, second declension.