Booster shot - 英语词汇详解

Meaning 1：booster shot (Booster shot)

Booster shot 🔊

/ˈbuːstər ʃɑːt/

An extra dose of a vaccine you get later to make your protection stronger and last longer.

booster shot 🔊

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/ˈbuːstər ʃɑːt/

A supplementary dose of a vaccine given after the initial series to reinforce and prolong protection.

📁 Category：Physical & Mental Health 🔖 Level：intermediate

📘 Details & Usage

📖 Root Explanation

From 'boost' (to increase) + '-er' (agent) + 'shot' (injection); a dose to boost immunity.

💡 Mnemonic

Think of a rocket booster giving extra power; a booster shot boosts your immune system.

📖 Example

The doctor suggested I get a booster shot before the flu season starts to stay healthy. 🔊 The doctor suggested I get a booster shot before the flu season starts to stay healthy.

🔗 Collocations

get a booster shot – receive a booster vaccine dose

annual booster shot – yearly vaccine reinforcement dose

booster shot appointment – scheduled time to receive a booster dose

🔄 Synonyms

booster dose (n.) – a supplementary dose of vaccine

additional dose (n.) – an extra vaccine dose beyond the primary series

third dose (n.) – a subsequent vaccine dose (common for some vaccines)

🚫 Antonyms

initial dose (n.) – the first vaccine dose in a series

primary series (n.) – the initial set of vaccine doses required for basic immunity

🌱 Derivatives

booster (n.) – a person or thing that boosts, especially a vaccine dose

boost (v.) – to increase or enhance something

📖 Cultural Story

Booster shots became common after diphtheria and tetanus vaccines in the 1940s. The term 'booster' reflects its function of boosting waning immunity.