Share this entry

Share this page

booster

Line breaks: boost¦er
Pronunciation: /ˈbuːstə
 
/

Definition of booster in English:

noun

1A device for increasing electrical voltage or signal strength.
Example sentences
  • Antenna boosters help to strengthen the signal between a cell tower and your phone.
  • A booster circuit uses a source voltage to generate a boosted voltage that is higher than the source voltage.
  • Antenna booster for areas with weak signals are another good choice.
2The first stage of a rocket or spacecraft, used to give initial acceleration and then jettisoned.
Example sentences
  • The camera will be turned on fifteen minutes prior to launch and will show the orbiter and solid rocket boosters on the launch pad.
  • 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.
  • In the first scenario, personal spaceflight will use lower-cost versions of classic boosters and spacecraft.
3 Medicine 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
More example sentences
  • 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.
  • Young children who have not received all five doses of the vaccine may require a booster dose if exposed to an infected family member.
  • I had a booster vaccination last year, needed every ten years.
4 [in combination] A source of help or encouragement: job fairs are a great morale booster
4.1North American A keen promoter of a person, organization, or cause.
Example sentences
  • 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 fact, if it weren't for parental involvement as sponsors, coaches, booster club participants, etc. most programs would not even survive.
  • In the early twentieth century, booster organizations that favored particular water projects proliferated.
5North American informal A shoplifter.

Definition of booster in:

Share this entry

Share this page

 

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day boscage
Pronunciation: ˈbäskij
noun
massed trees or shrubs