1. (

• apposition

) a grammatical relation between a word and a noun phrase that follows; "`Rudolph the red-nosed reindeer' is an example of apposition" ;

2. (

• apposition

) (biology) growth in the thickness of a cell wall by the deposit of successive layers of material ;

3. (

• juxtaposition ,
• apposition ,
• collocation

) the act of positioning close together (or side by side); "it is the result of the juxtaposition of contrasting colors" ;