What does amplipennis mean in Latin?

amplipennis, a adjective, means “large-winged, large-feathered”.

How do you pronounce amplipennis?

In classical Latin, [am.plɪˈpɛn.nɪs]; in ecclesiastical (church) Latin, [am.pliˈpɛn.nis].

adjectivethird-declension two-termination adjective

amplipennis (neuter amplipenne)

Classical[am.plɪˈpɛn.nɪs]Ecclesiastical[am.pliˈpɛn.nis]

singular
form	masculine	feminine	neuter
nominative	amplipennis	amplipennis	amplipenne
genitive	amplipennis	amplipennis	amplipennis
dative	amplipennī	amplipennī	amplipennī
accusative	amplipennem	amplipennem	amplipenne
ablative	amplipennī	amplipennī	amplipennī
vocative	amplipennis	amplipennis	amplipenne

plural
form	masculine	feminine	neuter
nominative	amplipennēs	amplipennēs	amplipennia
genitive	amplipennium	amplipennium	amplipennium
dative	amplipennibus	amplipennibus	amplipennibus
accusative	amplipennīs amplipennēs	amplipennīs amplipennēs	amplipennia
ablative	amplipennibus	amplipennibus	amplipennibus
vocative	amplipennēs	amplipennēs	amplipennia

From amplus (“large”) + penna (“feather; wing”) + -is.