Definition

1. Noun:
   • The causative agent of smallpox: A specific, highly contagious virus (Variola virus) that infects only humans and is responsible for the disease smallpox.
   • A potential biological weapon: Due to its severity and ease of transmission, the virus is classified as a Category A bioterrorism agent.

Usage

• The term "smallpox virus" is used in medical, historical, and biosecurity contexts to refer specifically to the pathogen.
• It is typically used with definite articles or possessive determiners (e.g., smallpox virus, smallpox virus).

Examples

• Noun:
  • The global vaccination campaign led to the eradication of the smallpox virus.
  • Scientists study archived samples of the smallpox virus under maximum containment.
  • The use of the smallpox virus as a bioweapon is a major security concern.

Advanced Usage

• "The smallpox virus is a DNA virus.": Used to describe its biological classification.
• "Stocks of the smallpox virus are kept in two high-security laboratories.": Refers to the physical samples of the virus preserved for research.

Variants and Related Words

• Variola virus (n): The official scientific name for the smallpox virus.
• Variola major (n): The virus strain that causes the most severe and common form of smallpox.
• Variola minor (n): A virus strain causing a milder form of the disease.
• Cowpox virus (n): A related virus used historically in the first smallpox vaccine.

Synonyms

• Variola: The formal synonym used in scientific and medical literature.

Notes on Meaning

• The term refers exclusively to the virus species of the genus that causes smallpox. It is not a general term for any virus.
• The phrase implies a historical context of a once-widespread disease and a contemporary context of biosecurity.

Noun

1. the virus that causes smallpox in humans; can be used as a bioweapon