What does igniārius mean in Latin?

igniārius, a adjective, means “of or belonging to fire”.

Where does igniārius come from?

Proto-Indo-European *h₁engʷ- → Proto-Indo-European *h₁n̥gʷnís → Proto-Italic *engʷnis → Latin igniārius.

adjectivefirst/second-declension adjective

igniārius (feminine igniāria, neuter igniārium)

singular
form	masculine	feminine	neuter
nominative	igniārius	igniāria	igniārium
genitive	igniāriī	igniāriae	igniāriī
dative	igniāriō	igniāriae	igniāriō
accusative	igniārium	igniāriam	igniārium
ablative	igniāriō	igniāriā	igniāriō
vocative	igniārie	igniāria	igniārium

plural
form	masculine	feminine	neuter
nominative	igniāriī	igniāriae	igniāria
genitive	igniāriōrum	igniāriārum	igniāriōrum
dative	igniāriīs	igniāriīs	igniāriīs
accusative	igniāriōs	igniāriās	igniāria
ablative	igniāriīs	igniāriīs	igniāriīs
vocative	igniāriī	igniāriae	igniāria

ignĭārĭus, a, um, adj. ignis,

I. of or belonging to fire.

I. Adj.: lapis, flint, Marc. Emp. 33 med.—

II. Subst.: ignĭārĭum, ĭi, n., an implement for producing fire, Plin. 16, 40, 76, § 207.

Proto-Indo-European *-yósder. Proto-Italic *-āzios Latin -arius Latin igniārius From ignis + -arius.