Alien Parasite

Parasitism

Parasitism is a close relationship between species, where one organism, the parasite, lives on or inside another organism, the host, causing it some harm, and is adapted structurally to this way of life. Parasites include single-celled protozoans such as the agents of malaria, sleeping sickness, and amoebic dysentery; animals such as hookworms, lice, mosquitoes, and vampire bats; fungi such as honey fungus and the agents of ringworm; and plants such as mistletoe, dodder, and the broomrapes.

alien

Noun

1. A person, animal, plant, or other thing which is from outside the family, group, organization, or territory under consideration.
2. A citizen or national of another sovereign state.

Adjective

1. Not belonging to the same country, land, or government, or to the citizens or subjects thereof; foreign.
2. Very unfamiliar, strange, or removed.

parasite

Noun

1. An organism that lives on or in another organism of a different species, deriving benefit from living on or in that other organism, while not contributing towards that other organism sufficiently to cover the cost to that other organism.
2. An internal parasite that is an animal or protist.

Verb

1. To parasitize.