sti

IPA/stˈaɪ/
IPA/stˈaɪ/

sti — abbreviation

1. a short form used in health care for an infection that people can catch through

1.縮寫B2
釋義

a short form used in health care for an infection that people can catch through sexual contact

例句

The clinic texted Saira that her STI test results were ready.

STI test results in a clinic message

During health class, Ezra learned what an STI can do untreated.

同義詞
  • sexually transmitted infection

    the full medical form used in writing and formal speech

  • STD

    older or less precise abbreviation that many people still use in general talk

文法句型

an STI

STI test

STI screening

用法筆記

Common in clinics, school health materials, and public-health advice. Distinguish from sense 2: this use keeps the medical focus on infection, even when a person has no symptoms yet.

常見錯誤

❌The doctor said I have an STI infection.
✅The doctor said I have an STI.
💡STI already ends with the word 'infection', so adding it again is repetitive.
❌My STI are ready.
✅My STI test results are ready.
💡STI names the condition, not the report from the clinic.

2. a short form used more generally for a disease or health problem mainly spread t

2.縮寫B2
釋義

a short form used more generally for a disease or health problem mainly spread through sex

例句

The poster warned students that some STIs can spread without pain.

public-health warning about STIs

Sirin asked whether a rash could be an STI.

同義詞

文法句型

an STI

common STIs

talk about STIs

用法筆記

More common in broad public discussion than in precise clinical writing. Distinguish from sense 1: this use does not stress the medical difference between an infection and a disease with symptoms.

常見錯誤

❌An STI always means someone feels sick.
✅An STI can exist before someone feels sick.
💡A person may carry the condition without clear symptoms at first.
❌Only adults can get an STI.
✅Anyone who has sexual contact can get an STI.
💡The term describes how the condition spreads, not a specific age group.