booster

noun

boost·er | \ ˈbü-stər

Definition of booster

: one that boosts: such as

a : an enthusiastic supporter

b : an auxiliary device for increasing force, power, pressure, or effectiveness

c slang : shoplifter

d : a radio-frequency amplifier for a radio or television receiving set

e : the first stage of a multistage rocket providing thrust for the launching and the initial part of the flight

f : a substance or dose used to renew or increase the effect of a drug or immunizing agent especially : booster shot

Synonyms & Antonyms Example Sentences Learn More about booster

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Examples of booster in a Sentence

These exercises are real metabolism boosters. Music is my favorite mood booster. A sincere compliment can be a true confidence booster. The university has a number of wealthy boosters who contribute generously each year. a new design for rocket boosters

Recent Examples on the Web

Anthony Scaramucci, once one of Trump's biggest boosters on the White House staff, has turned on the president and is using his celebrity to rally Republicans against his former boss. — Author: Robert Costa, Philip Rucker, Anchorage Daily News, "Trump critics eye GOP primary challenges - even if defeating him seems ‘daunting’," 22 Aug. 2019 Monumental Sports chief executive Ted Leonsis, whose company operates Capital One Arena, has been one of the most enthusiastic boosters for sports betting. — Fenit Nirappil, Washington Post, "Sports betting won’t launch in D.C. in time for NFL season; bars start applying," 9 Aug. 2019 The much smaller nine-story test stack consisted of a booster with a dummy version of the Orion spacecraft, designed to match the actual Orion’s weight, 22,000 lbs. — Jeffrey Kluger, Time, "With NASA's Orion Abort-System Test, Americans Just Took a Small (and Very Big) Step Closer to the Moon," 2 July 2019 Musk said in a tweet that included pictures of all three boosters. — Marcia Dunn, The Seattle Times, "SpaceX launches mega rocket, lands all 3 boosters," 14 Apr. 2019 This is the first time SpaceX was able to successfully land all of Falcon Heavy's three boosters. — Avery Thompson, Popular Mechanics, "SpaceX Lands All Three Falcon Heavy Boosters for the First Time," 10 Apr. 2019 Football players at the University of Louisiana are being encouraged to donate to a booster organization that funds the athletic department. — BostonGlobe.com, "Dale Earnhardt Jr., family OK after airline crash," 17 Aug. 2019 Sierra Nevada engineers and the company's owners, Fatih and Eren Ozmen, considered boosters built in Japan, Europe and by SpaceX and Blue Origin. — William Harwood, CBS News, "Dream Chaser spaceplanes to launch on ULA Vulcan rocket," 14 Aug. 2019 Most of the middle-class people have found private solution to a public service water delivery failure by investing in underground tank and booster pumps. — Washington Post, "People, companies forced to save water in parched India city," 13 Aug. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'booster.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.