booster
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2 ENTRIES FOUND:

boost·er

noun \ˈbü-stər\

Definition of BOOSTER

: one that boosts: 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 that increases the effectiveness of a medicament; especially : booster shot

Examples of BOOSTER

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

First Known Use of BOOSTER

1888

boost·er

noun \ˈbü-stər\   (Medical Dictionary)

Medical Definition of BOOSTER

: a substance that increases the effectiveness of a medicament; especially : booster shot

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