| Noun | 1. | complementation - the grammatical relation of a word or phrase to a predicate grammatical relation - a linguistic relation established by grammar |
| 2. | complementation - (linguistics) a distribution of related speech sounds or forms in such a way that they only appear in different contexts dispersion, distribution - the spatial or geographic property of being scattered about over a range, area, or volume; "worldwide in distribution"; "the distribution of nerve fibers"; "in complementary distribution" linguistics - the scientific study of language |