| parasitology | The branch of biology and of medicine concerned with all aspects of parasitism. Origin: parasite + G. Logos, study (05 Mar 2000) |
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| parasitome | The total mass or number of individuals of all developmental stages of a single parasite species in one host. Origin: parasite + -ome (fr. G. -oma), group, mass (05 Mar 2000) |
| parasitophobia | <psychology> Morbid fear of parasites. Origin: parasite + G. Phobos, fear (05 Mar 2000) |
| parasitophorous vacuole | A vacuole formed by layers of endoplasmic reticulum around an intracellular parasite which may serve to isolate the parasite and enclose it for lysozymal attack. (05 Mar 2000) |
| parasitosis | Infestation or infection with parasites. (05 Mar 2000) |
| parasitotropic | Pertaining to or characterised by parasitotropism. (05 Mar 2000) |
| parasitotropism | The special affinity of particular drugs or other agents for parasites rather than for their hosts, including microparasites that infect a larger parasite. Compare: organotropism. Synonym: parasitotropy. Origin: parasite + G. Trope, a turning (05 Mar 2000) |
| parasitotropy | The special affinity of particular drugs or other agents for parasites rather than for their hosts, including microparasites that infect a larger parasite. Compare: organotropism. Synonym: parasitotropy. Origin: parasite + G. Trope, a turning (05 Mar 2000) |
| parasol insertion | A form of insertion of the foetal blood vessels into the placenta, in which the vessels separate before reaching the placenta and develop toward it in a fold of amnion, somewhat like the ribs of an open parasol. Synonym: parasol insertion. (05 Mar 2000) |
| parasomnia | Any dysfunction associated with sleep, e.g., somnabulism, pavor nocturnus, enureseis, or nocturnal seizures. (05 Mar 2000) |
| parasphenoid | <anatomy> Near the sphenoid bone; applied especially to a bone situated immediately beneath the sphenoid in the base of the skull in many animals. The parasphenoid bone. Origin: Pref. Para- + sphenoid. Source: Websters Dictionary (01 Mar 1998) |
| paraspinal line | Radiographic image of the interface between the lung and paravertebral soft tissues. (05 Mar 2000) |
| parastasis | A reciprocal relationship among causal mechanisms that can compensate for, or mask defects in, each other; in genetics, a relationship between non-alleles (classified by some as a form of epistasis). Origin: G. Standing shoulder to shoulder (05 Mar 2000) |
| parasternal | Alongside the sternum. (05 Mar 2000) |
| parasternal hernia | foramen caecum of tongue |