1. Physician or surgeon; a professor of the art of healing.
alternative forms: leach Leech, heal thyself. (Wyclif... Read More
noun, plural: ectoparasites
(parasitology) A parasite that lives outside the body of the... Read More
noun, plural: infestations
(ecology) The state of having a large number of pest organisms thriving in a... Read More
A form of parasitism wherein the parasite lives outside the body of the host (as opposed to a parasite... Read More
Continuing from the previous tutorial investigating the origins of life on Earth....
Life began to flourish, and the... Read More