| parasinoidal sinuses | Lateral expansions of the superior sagittal sinus of the dura mater, often increasing in width with advancing age until, in the very old, they may extend two centimeters lateral to the midline; the endothelium-lined lumen of the lacunae are usually reduced to a spongelike labyrinth by numerous arachnoid granulations and dural trabeculae. Synonym: lacunae laterales, lateral lacunae, lateral lakes, parasinoidal sinuses. (05 Mar 2000) |
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| parasita | <zoology> An artificial group formerly made for parasitic insects, as lice, ticks, mites, etc. A division of copepod Crustacea, having a sucking mouth, as the lerneans. They are mostly parasites on fishes. Synonym: Siphonostomata. Source: Websters Dictionary (01 Mar 1998) |
| parasital | <botany> Of or pertaining to parasites; parasitic. Source: Websters Dictionary (01 Mar 1998) |
| parasite | <biology> An organism which obtains food and shelter from another organism (for example Giardia). (27 Sep 1997) |
| parasite-host ecosystem | 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) |
| parasitemia | The presence of parasites (especially malarial parasites) in the blood. (12 Dec 1998) |
| parasitic | <biology> Pertaining to, of the nature of or caused by a parasite. Origin: Gr. Parasitikos (18 Nov 1997) |
| parasitic chylocele | Brawny swelling of the scrotum as a result of chronic lymphatic obstruction. Synonym: chyloderma, lymph scrotum, parasitic chylocele. (05 Mar 2000) |
| parasitic cyst | A cyst formed by the larva of a metazoan parasite, such as a hydatid or trichinal cyst. (05 Mar 2000) |
| parasitic disease | A disease due to the presence and vital activity of a parasite, or as a reaction to a parasite. (05 Mar 2000) |
| parasitic diseases | Infections or infestations with parasitic organisms. They are often contracted through contact with an intermediate vector, but may occur as the result of direct exposure. (12 Dec 1998) |
| parasitic diseases, animal | Infections or infestations with parasitic organisms. The infestation may be experimental or veterinary. (12 Dec 1998) |
| parasitic eosinophilic lung disease | <radiology> All are metazoans (mostly nematodes), Ascaris, Strongyloides, Ancyclostoma, Schistosoma, tropical pulmonary eosinophilia, pulmonary larva migrans (12 Dec 1998) |
| parasitic granuloma | Cutaneous leishmaniasis manifested as warty papules affecting primarily the lower limbs. (05 Mar 2000) |
| parasitic haemoptysis | The clinical expression of paragonimiasis, marked by a cough and spitting of blood from the lungs. Synonym: endemic haemoptysis. (05 Mar 2000) |