What does phantasmaticus mean in Latin?

phantasmaticus, a adjective, means “imaginary, fantastic”.

How do you pronounce phantasmaticus?

In classical Latin, [pʰan.tasˈma.tɪ.kʊs]; in ecclesiastical (church) Latin, [fan.tazˈmaː.ti.kus].

adjectivefirst/second-declension adjective

phantasmaticus (feminine phantasmatica, neuter phantasmaticum)

Classical[pʰan.tasˈma.tɪ.kʊs]Ecclesiastical[fan.tazˈmaː.ti.kus]

singular
form	masculine	feminine	neuter
nominative	phantasmaticus	phantasmatica	phantasmaticum
genitive	phantasmaticī	phantasmaticae	phantasmaticī
dative	phantasmaticō	phantasmaticae	phantasmaticō
accusative	phantasmaticum	phantasmaticam	phantasmaticum
ablative	phantasmaticō	phantasmaticā	phantasmaticō
vocative	phantasmatice	phantasmatica	phantasmaticum

plural
form	masculine	feminine	neuter
nominative	phantasmaticī	phantasmaticae	phantasmatica
genitive	phantasmaticōrum	phantasmaticārum	phantasmaticōrum
dative	phantasmaticīs	phantasmaticīs	phantasmaticīs
accusative	phantasmaticōs	phantasmaticās	phantasmatica
ablative	phantasmaticīs	phantasmaticīs	phantasmaticīs
vocative	phantasmaticī	phantasmaticae	phantasmatica

phantasmătĭcus, a, um, adj. phantasma,

I. fantastic, imaginary, Isid. 8, 9, 7.

From phantasma + -icus.