Definition of booster in English:



  • 1A device for increasing electrical voltage or signal strength.

    • ‘A booster circuit uses a source voltage to generate a boosted voltage that is higher than the source voltage.’
    • ‘Among the items stolen was a green Ford Escort 1.8, a battery charger, a battery booster, a Toshiba laptop computer and two children's motorbikes.’
    • ‘It can be easily increased with a long antenna and a booster or car unit (for additional dollars).’
    • ‘Antenna booster for areas with weak signals are another good choice.’
    • ‘Even if gaming boosters are still ahead of the curve in the United States, interactive gaming on television is already a huge success - in Europe.’
    • ‘He is also calling for planning permission to be required for all but the tiniest signal boosters and public consultation be improved.’
    • ‘They both protrude about the same distance from the side of your notebook, but at first I thought that the phone card didn't have a connector for a booster antenna.’
    • ‘Within each subsector, the capacity booster dynamically selects the best lobe to handle a call.’
    • ‘The 43-year-old civil servant has lost alarm clocks, television boosters, a microwave and a stereo.’
    • ‘We'll be looking at repeaters and signal boosters as ways to keep signal strength high and excessive protocol chatter low.’
    • ‘They offer expensive hi-tech gadgets as free gifts in return for spending £20 or similar on a low-value product such as a mobile telephone signal booster.’
    • ‘They are a signal booster that allows you to duplicate tapes with minimal loss of quality.’
    • ‘Antenna boosters help to strengthen the signal between a cell tower and your phone.’
    • ‘The crime he committed has nothing to do with having an antenna booster, but that doesn't stop the reporter from talking about WiFi networks.’
    • ‘They have now agreed to pay for a TV-signal booster to improve reception.’
  • 2The first stage of a rocket or spacecraft, used to give initial acceleration and then jettisoned.

    • ‘The proposed system is supposed to intercept intercontinental ballistic missiles minutes after launch, while their rocket boosters are still burning.’
    • ‘‘When the rocket boosters launch, you're in for the ride of your life,’ Walheim said.’
    • ‘The two booster rockets flanking the space shuttle's liquid-fuel engine run on solid propellant.’
    • ‘The two solid rocket boosters separate from the shuttle about two minutes after launch, after which the main engines take over completely.’
    • ‘The long, relatively thin rockets flanking the Space Shuttle are solid rocket boosters.’
    • ‘The most reliable rockets thus far designed have been the Apollo Saturn lunar boosters and the space shuttles.’
    • ‘It should be capable of saving the passengers even if the booster rocket launching it fails.’
    • ‘It was designed to be fired from a short mobile launcher by means of two solid-fueled rocket boosters.’
    • ‘The loss of another shuttle, Challenger, in 1986, along with another seven astronauts, was eventually officially attributed to a leaky booster rocket.’
    • ‘The camera will be turned on fifteen minutes prior to launch and will show the orbiter and solid rocket boosters on the launch pad.’
    • ‘On the view screen the main booster separated from the rocket and the image began to fade.’
    • ‘In the first scenario, personal spaceflight will use lower-cost versions of classic boosters and spacecraft.’
    • ‘Rockets that use solid propellants, such as the space shuttle's solid rocket boosters, arrive with the propellant already stored inside them in a puttylike form.’
    • ‘The collective impact of such mythologies has been horrifying; the same booster that launched Sputnik is still the one most used.’
    • ‘The inability of both companies to launch rocket boosters on time certainly does not bode well.’
    • ‘The air vehicle's engines are started and it is launched from the container by a booster rocket.’
    • ‘The launch was delayed again because of a booster rocket problem.’
    • ‘The ground crews will also be monitoring the performance of the orbiter, solid rocket boosters and ground system while the tank is filled with the ultra-cold liquids.’
    • ‘However, the booster rocket that launched it also reached orbit, and this was easily visible from the Earth.’
    • ‘The rockets are called the shuttle's solid rocket boosters because they contain solid, as opposed to liquid, propellant.’
  • 3Medicine
    A dose of a vaccine that increases or renews the effect of an earlier one.

    ‘boosters at five-year intervals are recommended’
    as modifier ‘a booster injection’
    • ‘I had a booster vaccination last year, needed every ten years.’
    • ‘Dr. Robbins said that efforts to increase the efficacy of the vaccines will include studies on the effectiveness of a booster dose of the vaccine given one year later.’
    • ‘Firstly, the patient should be asked whether they have received a full course of tetanus vaccine and when they last received a booster injection.’
    • ‘Young children who have not received all five doses of the vaccine may require a booster dose if exposed to an infected family member.’
    • ‘Delaying vaccination until 15 months of age or adding a booster vaccination might solve this problem.’
    inoculation, vaccination, vaccine, immunization, dose
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  • 4in combination A source of help or encouragement.

    ‘job fairs are a great morale booster’
    1. 4.1North American A keen promoter of a person, organization, or cause.
      • ‘The university is clamping down on media access during his summer booster club tour, and publicity flacks are shielding the most available man in college football.’
      • ‘‘It's like night and day,’ says the booster club president.’
      • ‘All this information was easily available - on the Internet, from the U.S. Internal Revenue Service, even from the booster club officers themselves.’
      • ‘In fact, if it weren't for parental involvement as sponsors, coaches, booster club participants, etc. most programs would not even survive.’
      • ‘With a stipend in place, coaches and athletic administrators wouldn't be burdened with monitoring for potential abuses by school alumni and/or booster club members.’
      • ‘Edward DiLoreto, who owns a local engineering firm, wanted to buy the $400 ad to benefit the Downey High School baseball booster club.’
      • ‘In total, you'll probably pony up about $35 through the year for booster club functions or other events, totaling $700.’
      • ‘While both impoverished and wealthy school districts dine on the booster clubs' cash cow, a handful of local educators say it's time their teams went on a diet.’
      • ‘Gender inequity, powerful booster clubs, low athlete graduation rates, and violations of rules governing recruiting and academic standards are common.’
      • ‘Schools with great booster clubs don't like the program because of the conflicts that can arise between their sponsors and the ads the 3rd party sells.’
      • ‘Some of those teammates have been waiting to see him dominate a game as long as the various booster clubs, Internet sites and talk-show guys.’
      • ‘The sport receives considerably more cash, due to its own publicly based booster club.’
      • ‘How will you include parents, booster club, and students?’
      • ‘In a country where it is illegal to organize many types of public meetings, fans formed booster clubs and canvassed malls to court prospective voters.’
      • ‘In the early twentieth century, booster organizations that favored particular water projects proliferated.’
      • ‘That's kind of like the college football coach going to a booster club meeting and telling a joke about the rival school.’
      • ‘A garden club or a booster club for your children's sports/activities?’
      • ‘The U.S. Internal Revenue Service requires booster clubs spending $25,000 or more a year to seek a tax exemption.’
      advocate, proponent, promoter, proposer, supporter, standard-bearer, torch-bearer, defender, protector, upholder, backer, exponent, patron, sponsor, prime mover
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  • 5North American informal A shoplifter.