Following in time

• The quality of being toward the back or (in quadrupeds) toward the rear end

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Posteriority \Pos*te`ri*or"i*ty\, n. [Cf. F. post['e]riorit['e].] The state of being later or subsequent; as, posteriority of time, or of an event; -- opposed to priority .

WordNet Word definitions in WordNet
n. the quality of being toward the back or toward the rear end [ant: anteriority ] following in time [syn: subsequentness , subsequence ] [ant: priority ]

Wiktionary Word definitions in Wiktionary
n. The condition of being posterior (in any sense)

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
late 14c., "state of being behind," from Old French posteriorite (Modern French postériorité ), from Medieval Latin posterioritatem (nominative posterioritas ), from Latin posterior "later" (see posterior (adj.)).