DictionaryvectorDisease carrier
noun

vector

A carrier that introduces biological material into another organism or cell.

A mosquito acts as a vector when it spreads malaria.

Etymology

The Latin source directly means carrier. Biology applies it to an organism or vehicle that carries material into another organism or cell.

More examples

  • Ticks are vectors for the bacteria that cause Lyme disease.
  • Researchers use a modified virus as a vector to deliver genes.
  • This plasmid serves as a vector for DNA introduced into bacteria.

Forms

vector · vectors

Similar words

carrier
Carrier also includes infected hosts that do not transmit disease.
vehicle
Vehicle is broader, covering biological and nonbiological means of delivery.