SAT Basic
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infection

/ɪnˈfekʃn/
English Definition
n. invasion of the body by germs
中文释义
感染,传染
Example Sentence

Doctors prescribed antibiotics to treat the bacterial infection that had spread to the patient's lungs.

医生开了抗生素来治疗已扩散到患者肺部的细菌感染。

Synonyms
contamination disease illness
Seen in practice — from the Digital SAT question bank

- Post-surgical infection rates dropped from 4.2% to 1.8% within a year of the checklist's introduction.

From a Rhetorical Synthesis question · Expression of Ideas

- Researchers found the largest infection-rate improvement occurred in operating rooms that had previously reported the highest infection rates.

From a Rhetorical Synthesis question · Expression of Ideas

💡
Memory Aid / 记忆技巧
infect(infect)+ion(noun)
Know this word? Mark it mastered, or move on.
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Practice — Definition Match

Which choice best defines “infection”?

  1. A Feeling you want to vomit
  2. B A polite word or sign of welcome or recognition
  3. C Invasion of the body by germs
  4. D A person who commits a crime
Show answer

C — Invasion of the body by germs. “infection” means invasion of the body by germs.

Practice — Which Word Fits?

Which word means “invasion of the body by germs”?

  1. A offender
  2. B infection
  3. C nausea
  4. D greeting
Show answer

B — infection. “infection” means invasion of the body by germs.

Common questions about “infection”

What does “infection” mean?

infection — invasion of the body by germs. In Chinese: 感染,传染.

How do you pronounce “infection”?

infection is pronounced /ɪnˈfekʃn/.

How is “infection” used in a sentence?

Doctors prescribed antibiotics to treat the bacterial infection that had spread to the patient's lungs. (医生开了抗生素来治疗已扩散到患者肺部的细菌感染。)

What are synonyms for “infection”?

contamination, disease, illness — all close in meaning to infection (invasion of the body by germs).

Is “infection” an SAT vocabulary word?

Yes. infection is on the SAT Prep Basic list — the everyday academic words the SAT assumes you already have. The Digital SAT does not test vocabulary in isolation; words like this one are tested through Words in Context questions, where you choose the word that completes a passage most logically and precisely.

How can I remember “infection”?

infect(infect)+ion(noun)

Progress / 学习进度
47%
through SAT Basic
This level: 0 mastered (0% of the level)
The Digital SAT tests vocabulary through Words in Context questions, never as a standalone definition. Learn the word, then use it against a real passage.