What does terrisonus mean in Latin?

terrisonus, a adjective, means “sounding terribly”.

How do you pronounce terrisonus?

In classical Latin, [tɛrˈrɪ.sɔ.nʊs]; in ecclesiastical (church) Latin, [terˈriː.s̬o.nus].

adjectivefirst/second-declension adjective

terrisonus (feminine terrisona, neuter terrisonum)

Classical[tɛrˈrɪ.sɔ.nʊs]Ecclesiastical[terˈriː.s̬o.nus]

singular
form	masculine	feminine	neuter
nominative	terrisonus	terrisona	terrisonum
genitive	terrisonī	terrisonae	terrisonī
dative	terrisonō	terrisonae	terrisonō
accusative	terrisonum	terrisonam	terrisonum
ablative	terrisonō	terrisonā	terrisonō
vocative	terrisone	terrisona	terrisonum

plural
form	masculine	feminine	neuter
nominative	terrisonī	terrisonae	terrisona
genitive	terrisonōrum	terrisonārum	terrisonōrum
dative	terrisonīs	terrisonīs	terrisonīs
accusative	terrisonōs	terrisonās	terrisona
ablative	terrisonīs	terrisonīs	terrisonīs
vocative	terrisonī	terrisonae	terrisona

terrĭsŏnus, a, um, adj. terreo-sono,

I. sounding terribly: stridor venientis Alani, Claud. Laud. Stil. 1, 109.

From terreō (“to frighten”) + -sonus (“sounding”), from sonō (“to sound”).