booster

/'bu:stə/
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Thân thiện
booster

A child receives a vaccine booster at the doctor's office.

Definition
  1. Noun:
    • An additional dose that makes sure the first dose was effective: A supplementary dose of a vaccine or medication given to strengthen or renew the initial immunization or treatment.
    • The first stage of a multistage rocket: A rocket engine or a self-contained section of a rocket that provides initial thrust and is then jettisoned.
    • An amplifier for restoring the strength of a transmitted signal: A device, especially in electronics or telecommunications, used to increase the power or amplitude of a signal.
    • A thief who steals goods that are in a store: A shoplifter; someone who steals merchandise from retail establishments.
    • Someone who is an active supporter and advocate: A person who enthusiastically promotes, supports, or champions a cause, person, or activity.
    • A person who backs a politician or a team etc.: A supporter or fan.
Examples of Usage
  • Noun:
    • I got my flu booster shot this morning. (Referring to an additional vaccine dose.)
    • The rocket's booster separated successfully two minutes after launch. (Referring to a rocket stage.)
    • We installed a signal booster to improve the cell phone reception in the building. (Referring to an amplifier.)
    • The store installed new cameras to catch boosters. (Referring to a shoplifter.)
    • She has been a real booster for the local arts scene. (Referring to an active supporter.)
    • He's a loyal booster of the university's football team. (Referring to a fan or backer.)
Advanced Usage

  • "Booster seat": A special car seat for a young child that raises them to a height where the adult seat belt fits correctly.

    • Your child should use a booster seat until they are tall enough for the regular seat belt.

  • "Booster club": An organization that provides support, often financial, for a sports team or other group.

    • The school's booster club raised money for new team uniforms.
Variants and Related Words
  • Boost (verb): To help or encourage something to increase or improve.
    • The new campaign aims to boost sales.
  • Boosterism (noun): The active promotion of a city, organization, etc.
    • The mayor's speech was full of civic boosterism.
Synonyms
  • Supporter: A person who approves of and encourages someone or something.
  • Promoter: A person or company that finances or organizes an event.
  • Amplifier: An electronic device that strengthens signals.
  • Shoplifter: A person who steals goods from a store.
Related Phrasal Verbs/Compounds
  • Boost up: To lift or raise someone or something; to encourage.
    • Can you boost me up so I can see over the fence?
    • We need to boost up team morale.
Related Idioms
  • A shot in the arm / A booster shot: Something that has a sudden, strong, positive effect on something.
    • The new investment was a real booster shot for the local economy.
booster

A child receives a vaccine booster at the doctor's office.

Noun
  1. an additional dose that makes sure the first dose was effective
  2. the first stage of a multistage rocket
  3. an amplifier for restoring the strength of a transmitted signal
  4. a thief who steals goods that are in a store
  5. someone who is an active supporter and advocate
  6. a person who backs a politician or a team etc.
    • all their supporters came out for the game
    • they are friends of the library

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