What does acornis mean in Latin?

acornis, a adjective, means “having no horn”.

How do you pronounce acornis?

In classical Latin, [aˈkɔr.nɪs]; in ecclesiastical (church) Latin, [aˈkɔr.nis].

adjectivethird-declension two-termination adjective

acornis (neuter acorne)

Classical[aˈkɔr.nɪs]Ecclesiastical[aˈkɔr.nis]

singular
form	masculine	feminine	neuter
nominative	acornis	acornis	acorne
genitive	acornis	acornis	acornis
dative	acornī	acornī	acornī
accusative	acornem	acornem	acorne
ablative	acornī	acornī	acornī
vocative	acornis	acornis	acorne

plural
form	masculine	feminine	neuter
nominative	acornēs	acornēs	acornia
genitive	acornium	acornium	acornium
dative	acornibus	acornibus	acornibus
accusative	acornīs acornēs	acornīs acornēs	acornia
ablative	acornibus	acornibus	acornibus
vocative	acornēs	acornēs	acornia

From a- + cornis.