- (in quadrupeds) pertaining to or toward the rear or caudal end of the body.
- (in humans and other primates) pertaining to or toward the back plane of the body, equivalent to the dorsal surface of quadrupeds.
Origin of posterior
Related formspos·te·ri·or·ly, adverb
Examples from the Web for posteriorly
The lower end of the humerus could be felt to be decidedly thickened both anteriorly and posteriorly.Castes and Tribes of Southern India|Edgar Thurston
No facet on superior margin of centrum either anteriorly or posteriorly.The Beaked Whales of the Family Ziphidae|Frederick True
The plastron is united to the carapace by ligamentous tissue and is somewhat flexible anteriorly and posteriorly.
In this race, which is common in Calcutta, the zoœcia are almost circular but truncate or concave anteriorly and posteriorly.Freshwater Sponges, Hydroids & Polyzoa|Nelson Annandale
If he remains, the posteriorly situated crow takes a peck at his tail.Jungle Folk|Douglas Dewar