vi

vi — abbreviation

1. a written abbreviation for the Virgin Islands, a US territory in the Caribbean,

1.縮寫B1
釋義

a written abbreviation for the Virgin Islands, a US territory in the Caribbean, used after a town or island name in addresses and location references.

例句

Mail to Christiansted, VI, usually arrives within five business days via the US Postal Service.

postal address after town name

Charlotte Amalie, VI, is a popular stop for Caribbean cruise ships.

postal abbreviation for US territory

用法筆記

This abbreviation is typically written in capital letters (VI) and follows the name of the island or town, separated by a comma. It is most commonly seen in postal addresses and on official documents.

常見錯誤

❌I spent my vacation in VI.
✅I spent my vacation in the U.S. Virgin Islands.
💡The abbreviation VI alone is not used as a standalone name; it normally follows a specific island or town name.

2. a written abbreviation for 'virulent', written after the scientific name of a ba

2.縮寫C1
釋義

a written abbreviation for 'virulent', written after the scientific name of a bacterium, virus, or fungus to indicate that it is a particularly dangerous and aggressive strain that can cause severe disease.

例句

The lab confirmed that the sample was Salmonella typhi vi, not the harmless type.

vi follows bacterial species name

Five patients got the E. coli vi strain from contaminated salad and developed severe fever and diarrhea.

用法筆記

The abbreviation vi is usually written in lowercase and placed after the species or strain name (e.g., 'Mycobacterium tuberculosis vi'). It is most frequently encountered in medical research papers, laboratory reports, and microbiology textbooks.

常見錯誤

❌The patient has vi.
✅The patient was infected with a vi strain of the bacterium.
💡vi is an abbreviation for 'virulent' that modifies the strain name; it is not a disease name by itself.