booster

noun

boost·​er ˈbü-stər How to pronounce booster (audio)
: 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

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 In your quest for a six-pack, all that exercise is releasing feel-good endorphins, improving brain health, and reducing cortisol levels while also improving body image—a major self-confidence booster. Adam Morganstern, Robb Report, 2 Mar. 2024 Lastly, players can add on a booster that applies a passive perk for the squad With only four slots and a booster, players and their team have to pick the right Stratagems for the job. Gieson Cacho, The Mercury News, 26 Feb. 2024 Prior to Friday’s court ruling, only athletes already enrolled at a college could make NIL deals, whether with a collective or a booster. Gary Bedore, Kansas City Star, 24 Feb. 2024 And while a scoop of Marshmallow Sky may not be a health food (even if it’s blended into a milkshake), spirulina is known for being an immunity booster and containing vitamins and minerals. Melissa Kravitz Hoeffner, Forbes, 23 Feb. 2024 The game between the Kansas City Chiefs and the San Francisco 49ers has added interest thanks to music superstar Taylor Swift, who has become a Chiefs booster after beginning a relationship with Chiefs tight end Travis Kelce. Aaron Couch, The Hollywood Reporter, 11 Feb. 2024 And how about Casey Wasserman, one of the Bruins’ biggest boosters and the LA 28 Olympics chairman? Bill Plaschke, Los Angeles Times, 10 Feb. 2024 American has its own field specifically for the girls team funded by athletic boosters and the Eagles’ own fundraising efforts, but it is completely maintained by Mapelli. Nathan Canilao, The Mercury News, 10 Feb. 2024 Imagine gadgets that aren’t just cool toys but also brain boosters, mixing the best of fun and learning into one awesome package. Mia Meltzer, Rolling Stone, 6 Feb. 2024

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'booster.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1888, in the meaning defined above

Time Traveler
The first known use of booster was in 1888

Dictionary Entries Near booster

Cite this Entry

“Booster.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/booster. Accessed 19 Mar. 2024.

Kids Definition

booster

noun
boost·​er ˈbü-stər How to pronounce booster (audio)
1
: one that boosts
2
: an enthusiastic supporter
3
4
: a device for strengthening radio or television signals
5
: the first stage of a multistage rocket providing force for the launching and the first part of the flight

Medical Definition

booster

noun
boost·​er ˈbü-stər How to pronounce booster (audio)
: a substance or dose used to renew or increase the effect of a drug or immunizing agent: such as
a(1)
(2)
b
: synergist sense 1
a chemical acting as a booster to sulfa drugs

More from Merriam-Webster on booster

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