To complete, to bring to perfection, to make whole. / To provide what the partner lacks and lack what the partner provides, thus forming part of a whole.

(now rare) Something (or someone) that completes; the consummation. / (obsolete) The act of completing something, or the fact of being complete; completion, completeness, fulfilment.

The state or quality of being complemental.

In a complemental manner

Of the nature of a complement; completing. / Complementary. / (obsolete) Additional; supplemental, accessory; ancillary.

That can be complemented

plural of complement

Third-person singular simple present indicative form of complement

present participle of complement

simple past tense and past participle of complement