booster

Word parts

boost + -er

Pronunciation

• (US) IPA ^(key): /ˈbustɚ/

• Audio (AU)

  (file)

Noun

Singular booster

Plural boosters

1. (countable) A booster is a person or thing that supports, assists, or increases power or effectiveness.
2. (countable) A booster is a rocket that gives a spacecraft extra power when it leaves the earth, or that makes a missile go further.

Related words

• boost