apposition -- (a grammatical relation between a word and a noun phrase that follows; "`Rudolph the red-nosed reindeer' is an example of apposition")
apposition -- ((biology) growth in the thickness of a cell wall by the deposit of successive layers of material)
juxtaposition, apposition, collocation -- (the act of positioning close together (or side by side); "it is the result of the juxtaposition of contrasting colors")