What does posterior mean in Latin?

posterior, a noun, means “later generations”.

What is the genitive of posterior?

The genitive singular is posteriōris. posterior is masculine, third declension.

Proto-Indo-European *pós → Proto-Indo-European *pósti → Proto-Italic *posti → Proto-Italic *posteros → Latin posterior.

noun · masculinethird declension

posterior m (genitive posteriōris)

Mille Verba core vocabulary

Latin posterior Comparative degree of posterus, from post.

Descendants

adjectivethird declension

posterior²

posterior (comparative, neuter posterius)

Mille Verba core vocabulary

singular
form	masculine	feminine	neuter
nominative	posterior	posterior	posterius
genitive	posteriōris	posteriōris	posteriōris
dative	posteriōrī	posteriōrī	posteriōrī
accusative	posteriōrem	posteriōrem	posterius
ablative	posteriōre posteriōrī	posteriōre posteriōrī	posteriōre posteriōrī
vocative	posterior	posterior	posterius

plural
form	masculine	feminine	neuter
nominative	posteriōrēs	posteriōrēs	posteriōra
genitive	posteriōrum	posteriōrum	posteriōrum
dative	posteriōribus	posteriōribus	posteriōribus
accusative	posteriōrēs posteriōrīs	posteriōrēs posteriōrīs	posteriōra
ablative	posteriōribus	posteriōribus	posteriōribus
vocative	posteriōrēs	posteriōrēs	posteriōra

postĕrĭor, us,

I. comp. from posterus.

Latin posterior Comparative degree of posterus, from post.

What does posterior mean in Latin?: posterior, a noun, means “later generations”.
What is the genitive of posterior?: The genitive singular is posteriōris. posterior is masculine, third declension.
Where does posterior come from?: Proto-Indo-European *pós → Proto-Indo-European *pósti → Proto-Italic *posti → Proto-Italic *posteros → Latin posterior.