‖ [ L. a (ab) + posterior latter. ] 1. (Logic) Characterizing that kind of reasoning which derives propositions from the observation of facts, or by generalizations from facts arrives at principles and definitions, or infers causes from effects. This is the reverse of a priori reasoning. [ 1913 Webster ]

2. (Philos.) Applied to knowledge which is based upon or derived from facts through induction or experiment; inductive or empirical. [ 1913 Webster ]

a. [ L. posterior, compar. of posterus coming after, from post after. See Post-. ] 1. Later in time; hence, later in the order of proceeding or moving; coming after; -- opposed to prior. [ 1913 Webster ]

Hesiod was posterior to Homer. Broome. [ 1913 Webster ]

2. Situated behind; hinder; -- opposed to anterior. [ 1913 Webster ]

3. (Anat.) At or toward the caudal extremity; caudal; -- in human anatomy often used for dorsal. [ 1913 Webster ]

4. (Bot.) On the side next the axis of inflorescence; -- said of an axillary flower. Gray. [ 1913 Webster ]

n. [ Cf. F. postériorité. ] The state of being later or subsequent; as, posteriority of time, or of an event; -- opposed to priority. [ 1913 Webster ]

adv. Subsequently in time; also, behind in position. [ 1913 Webster ]

n. pl. The hinder parts, as of an animal's body. Swift. [ 1913 Webster ]