Wordnet 3.0
NOUN (1)
1.
(linguistics) the placing of one linguistic element after another (as placing a modifier after the word that it modifies in a sentence or placing an affix after the base to which it is attached);
The Collaborative International Dictionary of English v.0.48:
Postposition \Post`po*si"tion\, n. [Cf. F. postposition. See
Postpone.]
1. The act of placing after, or the state of being placed
after. "The postposition of the nominative case to the
verb." --Mede.
[1913 Webster]
2. A word or particle placed after, or at the end of, another
word; -- distinguished from preposition.
[1913 Webster]
WordNet (r) 3.0 (2006):
postposition
n 1: (linguistics) the placing of one linguistic element after
another (as placing a modifier after the word that it
modifies in a sentence or placing an affix after the base
to which it is attached)