Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Located behind a part or toward the rear of a structure.
  • adj. Relating to the caudal end of the body in quadrupeds or the dorsal side in humans and other primates.
  • adj. Botany Next to or facing the main stem or axis.
  • adj. Coming after in order; following.
  • adj. Following in time; subsequent.
  • n. The buttocks.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Located behind, or towards the rear of an object.
  • adj. Following in order or in time.
  • adj. Nearer the back end; nearer the caudal end of the body in quadrupeds or the dorsal end in bipeds.
  • adj. Next to, or facing the main stem or axis.
  • n. The buttocks.

from the GNU version of the Collaborative International Dictionary of English

  • adj. Later in time; hence, later in the order of proceeding or moving; coming after; -- opposed to prior.
  • adj. Situated behind; hinder; -- opposed to anterior.
  • adj. At or toward the caudal extremity; caudal; -- in human anatomy often used for dorsal.
  • adj. On the side next the axis of inflorescence; -- said of an axillary flower.

from The Century Dictionary and Cyclopedia

  • Later in position in a series or course of action; coming after.
  • Especially, later or subsequent in time: opposed to prior.
  • Situated behind; hinder: opposed to anterior.
  • In botany, situated on the side nearest the axis; superior: said of the parts of an axillary flower. Compare anterior.
  • n. The hinder part; in the plural, the hinder parts of the body of man or any animal.
  • n. plural The latter part.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. the fleshy part of the human body that you sit on
  • adj. located at or near or behind a part or near the end of a structure
  • n. a tooth situated at the back of the mouth
  • adj. coming at a subsequent time or stage

Etymologies

Latin, comparative of posterus, coming after, from post, afterward; see apo- in Indo-European roots.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin posterior, comparative of posterus ("coming after"). (Wiktionary)

Examples

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