- 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)
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Origin of complement
synonym study for complement
words often confused with complement
OTHER WORDS FROM complementcom·ple·ment·er, noun
Example sentences from the Web for complement
The Heat executive also emphasized that the screenings are a complement to all the other steps being taken to keep guests and employees from catching the virus, should it make its way into the arena.Miami Heat to use coronavirus-sniffing dogs to allow some fans back into arena|Des Bieler|January 22, 2021|Washington Post
He said the band’s usual 80-member inauguration complement will be fewer than 60 this year.
The deal may also prove that some of Alexion’s R&D around the complement system will dovetail with AstraZeneca’s heavy investment into a class of immunotherapy cancer treatments known as PARP inhibitors.Why shareholders had a severe adverse reaction to AstraZeneca’s Alexion deal|Jeremy Kahn|December 14, 2020|Fortune
This cornbread dressing is not only delicious with turkey, but is a tasty complement to a holiday ham.
“Digital wallets are a natural complement to all forms of digital currency,” said Schulman, adding that PayPal is in close talks with central banks and regulators to explore new uses for these wallets.PayPal plans a much wider embrace of cryptocurrency, including Venmo use|Jeff|November 2, 2020|Fortune
Complementing him, she added Uri Sagi, a well-respected former leader of military intelligence.
Arizona contends that it is simply complementing federal law.Supreme Court Takes Up Controversial Arizona Immigration Law|Laura Colarusso|April 24, 2012|DAILY BEAST
I had now that rare complementing pair, a legend and its historical foundation.
This theory seems true enough when we remember that mankind has three languages, each complementing the other.Critical & Historical Essays|Edward MacDowell
Complementing the work of these men and women was the opinion of the American serviceman himself.Integration of the Armed Forces, 1940-1965|Morris J. MacGregor, Jr.
Corruption, theft and graft were tolerated by the state as means of complementing income.After the Rain|Sam Vaknin
Candace did not know how long the reading and the music had been going on, each complementing the other.A Little Country Girl|Susan Coolidge
British Dictionary definitions for complement
- 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