complement

1. The totality, the full amount or number which completes something. (countable, uncountable)
2. The whole working force of a vessel. (countable, uncountable)
3. An angle which, together with a given angle, makes a right angle. (countable, uncountable)
4. Something which completes, something which combines with something else to make up a complete whole; loosely, something perceived to be a harmonious or desirable partner or addition. (countable, uncountable)
5. A word or group of words that completes a grammatical construction in the predicate and that describes or is identified with the subject or object. (countable, uncountable)
6. A phonetic complement is a graphic element that modifies another, such as (in Linear B script) a small syllabogram that is attached to a logogram as an abbreviation of its reading (as opposed to an adjunct that abbreviates an adjective that modifies that logogram). (countable, uncountable)
7. An interval which, together with the given interval, makes an octave. (countable, uncountable)
8. The color which, when mixed with the given color, gives black (for mixing pigments) or white (for mixing light). (countable, uncountable) · The complement of blue is orange.

Plural complements