What does Laodicēnus mean in Latin?

Laodicēnus, a adjective, means “Laodicean”.

How do you pronounce Laodicēnus?

In classical Latin, [ɫa.ɔ.dɪˈkeː.nʊs]; in ecclesiastical (church) Latin, [la.o.diˈt͡ʃɛː.nus].

adjectivefirst/second-declension adjective

Laodicēnus (feminine Laodicēna, neuter Laodicēnum)

Classical[ɫa.ɔ.dɪˈkeː.nʊs]Ecclesiastical[la.o.diˈt͡ʃɛː.nus]

singular
form	masculine	feminine	neuter
nominative	Laodicēnus	Laodicēna	Laodicēnum
genitive	Laodicēnī	Laodicēnae	Laodicēnī
dative	Laodicēnō	Laodicēnae	Laodicēnō
accusative	Laodicēnum	Laodicēnam	Laodicēnum
ablative	Laodicēnō	Laodicēnā	Laodicēnō
vocative	Laodicēne	Laodicēna	Laodicēnum

plural
form	masculine	feminine	neuter
nominative	Laodicēnī	Laodicēnae	Laodicēna
genitive	Laodicēnōrum	Laodicēnārum	Laodicēnōrum
dative	Laodicēnīs	Laodicēnīs	Laodicēnīs
accusative	Laodicēnōs	Laodicēnās	Laodicēna
ablative	Laodicēnīs	Laodicēnīs	Laodicēnīs
vocative	Laodicēnī	Laodicēnae	Laodicēna

Borrowed from Ancient Greek Λαοδικηνός (Laodikēnós). By surface analysis, Laodicea + -ēnus.