Definition

1. Noun:
   • An external parasite: An organism that lives on the exterior of a host organism, deriving sustenance from it. This includes parasites such as fleas, lice, and ticks.

Usage Examples

• Noun:
  • The veterinarian identified the flea as a common ectoparasite affecting domestic cats.
  • Researchers are studying methods to control ectoparasites on livestock to improve animal health.

Advanced Usage

• In a biological/ecological context: The term is used to describe the ecological relationship where one organism (the ectoparasite) benefits at the expense of the host.
  • The study focused on the population dynamics of the ectoparasite and its impact on the host's reproductive success.

Variants and Related Words

• Ectoparasitic (adj): Relating to or characteristic of an ectoparasite.
  • The fish exhibited ectoparasitic infestations on its scales.
• Ectoparasitism (n): The state or condition of being infested with ectoparasites; the ecological relationship itself.
  • Ectoparasitism can lead to secondary infections in the host animal.

Synonyms

• External parasite: A direct synonym describing a parasite living on the outside of its host.
• Epizoon (n, technical): An animal that lives on the exterior of another animal.

Antonyms

• Endoparasite (n): A parasite that lives inside the body of its host.

Noun

1. any external parasitic organism (as fleas)