- 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, as small in The house is small or president in They elected her president.Compare object complement, subject complement.
- any word or group of words used to complete a grammatical construction, especially in the predicate, including adverbials, as on the table in He put it on the table, infinitives, as to go in They are ready to go, and sometimes objects, as ball in He caught the ball.
- a system in vertebrate blood of 12 or more proteins that react in a cascade to a cell displaying immune complexes or foreign surfaces, acting in various combinations to coat the cell and promote phagocytosis, make holes in the cell wall, or enhance the inflammatory response.
- any of the proteins in the complement system, designated C1, C2, etc.
verb (used with object)
verb (used without object)
Origin of complement
Examples from the Web for complement
Contemporary Examples of complement
They play an important role fighting next to the men because they complement one another.Embedding With the Women Who Are Kicking ISIS Ass
December 15, 2014
To complement brain wiring, everyone walks around with retinal cams.The Internet Embedded in Your Head
November 21, 2014
The ship is highly automated with a crew of just 142 -- compared to older ships that have a complement of about 300.Can the Navy's $12 Billion Stealth Destroyer Stay Afloat?
October 22, 2014
The mini-thons will be thematically organized to complement the new episode.A 200-Hour ‘Simpsons’ Marathon? That’s Unpossible!
July 24, 2014
Indeed, text and sound not only complement but enhance one another.Beguiling Books on Steroids Make Interactive Reading a Pleasure
June 27, 2014
Historical Examples of complement
Each of the other five had thirteen 12-inch guns and a complement of 1,000 men.
The crew of the Avenger is an inconceivable ship's complement for any pirate.The Pirate and The Three Cutters
But with this it could journey to Weald with almost any complement on board.Pariah Planet
She can be worked with a complement of eighteen seamen and three stokers.The Last Voyage
Lady (Annie Allnutt) Brassey
Your intellects, if properly trained, should be the complement of your chief's.Lord Kilgobbin
- a noun phrase that follows a copula or similar verb, as for example an idiot in the sentence He is an idiot
- a clause that serves as the subject or direct object of a verb or the direct object of a preposition, as for example that he would be early in the sentence I hoped that he would be early
Word Origin for complement
late 14c., "that which completes," from Old French compliement "accomplishment, fulfillment" (14c., Modern French complément), from Latin complementum "that which fills up or completes," from complere "fill up" (see complete (adj.)). Originally also having senses which were taken up c.1650-1725 by compliment.
1610s, "exchange courtesies," from complement (n.). Meaning "make complete" is from 1640s. Related: Complemented; complementing.