plānus (“flat; even”) + penna (“feather”) + -is.
plānipennis (neuter plānipenne); third-declension two-termination adjective
Third-declension two-termination adjective.
singular | plural | ||||
---|---|---|---|---|---|
masc./fem. | neuter | masc./fem. | neuter | ||
nominative | plānipennis | plānipenne | plānipennēs | plānipennia | |
genitive | plānipennis | plānipennium | |||
dative | plānipennī | plānipennibus | |||
accusative | plānipennem | plānipenne | plānipennēs plānipennīs |
plānipennia | |
ablative | plānipennī | plānipennibus | |||
vocative | plānipennis | plānipenne | plānipennēs | plānipennia |