| parasitic infection | <microbiology> A successful invasion of a host by an organism that uses the host for food and shelter. (27 Sep 1997) |
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| parasitic leiomyoma | <tumour> A uterine leiomyoma which has become detached from the uterus and adherent to another peritoneal surface from which it derives a blood supply. (05 Mar 2000) |
| parasitic melanoderma | Excoriations and melanoderma caused by scratching the bites of the body louse, Pediculus corporis. Synonym: Greenhow's disease, vagabond's disease, vagrant's disease. Racial melanoderma, the normally dark skin of blacks and certain other races. Senile melanoderma, cutaneous pigmentation occurring in the aged. Synonym: melasma universale. (05 Mar 2000) |
| parasitic otitis | An infestation of the auditory canal of cats, dogs, foxes, and other animals by auricular mites, chiefly Otodectes cynotis, which infest the ears and cause considerable discomfort and tenderness; in extreme cases, they cause symptoms such as loss of appetite, wasting, and fits. See: otodectic mange. Synonym: parasitic otitis. (05 Mar 2000) |
| parasitic thyroiditis | Chronic South American trypanosomiasis with involvement of the thyroid gland, causing myxoedema. (05 Mar 2000) |
| parasitical | 1. Of the nature of a parasite; fawning for food or favors; sycophantic. "Parasitic preachers." 2. <botany> Of or pertaining to parasites; living on, or deriving nourishment from, some other living animal or plant. See Parasite, 2 & 3. Parasitic gull, Parasitic jager. <zoology> See Jager. Parasit"ically, Parasit"icalness. Origin: L. Parasiticus, Gr., cf. F. Parasitique. Source: Websters Dictionary (01 Mar 1998) |
| parasiticidal | Destructive to parasites. (05 Mar 2000) |
| parasiticide | An agent that destroys parasites. Origin: parasite + L. Caedo, to kill (05 Mar 2000) |
| parasitise | To invade as a parasite. (05 Mar 2000) |
| parasitism | <biology, microbiology> A type of symbiosis where two (or more) organisms from different species live in close proximity to one another, in which one member depends on another for its nutrients, protection, and/or other life functions. The dependent member (the parasite) benefits from the relationship while the other one (the host) is harmed by it. (09 Oct 1997) |
| parasitocenose | Complex of all parasite species and individuals associated with a specific host. Synonym: parasite-host ecosystem. Origin: parasite + G. Koinos, common, together (05 Mar 2000) |
| parasitogenesis | The evolution of relationships between parasite and host. (05 Mar 2000) |
| parasitogenic | 1. Caused by certain parasites. 2. Favouring parasitism. Origin: parasite + G. -gen, producing (05 Mar 2000) |
| parasitoid | Denoting a feeding relationship intermediate between predation and parasitism, in which the parasitoid eventually destroys its host; refers especially to parasitic wasps (order Hymenoptera) whose larvae feed on and finally destroy a grub or other arthropod host stung by the mother wasp prior to laying its egg(s) on the host. Origin: parasite + G. Eidos, appearance (05 Mar 2000) |
| parasitologist | One who specialises in the science of parasitology. (05 Mar 2000) |