booster
booster Lexical Profile
booster Game Scores & Validity
• noun
A supplementary dose of a vaccine or immunizing agent administered periodically to maintain or renew immunity from an earlier dose.
"The clinic recommends getting a tetanus booster every ten years to ensure continued protection."
An auxiliary rocket engine, amplifier, or mechanical device used to provide initial thrust, extra power, or increased signal strength.
"The spacecraft's solid-fuel boosters detached cleanly two minutes after liftoff."
North American An enthusiastic supporter, promoter, or fundraising backer of a school, sports team, town, or organization.
"The high school athletic boosters raised enough money to purchase new uniforms for the track team."
A cushion or portable seat placed on top of a regular chair or vehicle seat to raise a young child to a safe height.
"The restaurant provided a sturdy plastic booster so the toddler could reach the table comfortably."
• Rhymes for booster
Word Origin & Etymology
First recorded in the late 19th century in American English, formed from the verb 'boost' (of uncertain origin, possibly dialectal) and the agentive suffix '-er'.