Definition from Wiktionary, the free dictionary
postposition (plural postpositions)
- (grammar) Any of various words in languages such as Hindi, Japanese and Finno-Ugric languages (Estonian, Finnish and Hungarian) which serve the same purpose as a preposition but come after the noun.
- The act of placing after, or the state of being placed after.
- The postposition of the nominative case to the verb. — Mede.
Derived terms 
(grammar) words that come after the noun
See also 
- Genitive singular form of postpositio.
postposition f (plural postpositions)