| parainfluenza virus 1, human | The type species of paramyxovirus also called haemadsorption virus 2 (ha2), which causes laryngotracheitis in humans, especially children. (12 Dec 1998) |
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| parainfluenza virus 2, human | A species of rubulavirus associated particularly with acute laryngotracheitis (croup) in children aged 6 months to 3 years. (12 Dec 1998) |
| parainfluenza virus 3, human | A species of paramyxovirus frequently isolated from small children with pharyngitis, bronchitis, and pneumonia. (12 Dec 1998) |
| parainfluenza viruses | Virus's of the genus Paramyxovirus, of four types: type 1 (haemadsorption virus type 2), which includes sendai virus, causes acute laryngotracheitis in children and occasionally adults; type 2 (croup-associated virus) is associated especially with acute laryngotracheitis or croup in young children and minor upper respiratory infections in adults; type 3 (haemadsorption virus type 1; shipping fever virus) has been isolated from small children with pharyngitis, bronchiolitis, and pneumonia, and causes occasional respiratory infection in adults; bovine strains have been isolated from cattle with shipping fever, and the virus has also been isolated from sheep; type 4 has been isolated from a very few children with minor respiratory illness. (05 Mar 2000) |
| parajejunal fossa | A peritoneal fossa that has been seen in a few cases in which the jejunum has no mesentery but is attached to the posterior parietal peritoneum; the fossa begins at the point where the mesentery ends, and is seen on raising up the knuckle of free intestine. Synonym: Broesike's fossa, fossa parajejunalis, mesentericoparietal fossa, mesentericoparietal recess. (05 Mar 2000) |
| parakappacism | Substitution of another letter sound for that of k. See: kappacism. Origin: para-+ G. Kappa, the letter k (05 Mar 2000) |
| parakeet | <zoology> Same as Parrakeet. <zoology> Any one of numerous species of small parrots having a graduated tail, which is frequently very long; called also paroquet and paraquet. Many of the Asiatic and Australian species belong to the genus Paleornis; others belong to Polytelis, Platycercus, Psephotus, Euphema, and allied genera. The American parrakeets mostly belong to the genus Conurus, as the Carolina parrakeet (C. Carolinensis). See: Paroquet. Source: Websters Dictionary (01 Mar 1998) |
| parakeratosis | <pathology> Persistence of the nuclei in the cells of the stratum corneum of the epidermis, as seen, for example: in psoriasis. (09 Oct 1997) |
| parakeratosis ostracea | parakeratosis scutularis |
| parakeratosis variegata | A rare condition that simulates chronic radiodermatitis in appearance; may eventuate as mycosis fungoides. Synonym: parakeratosis variegata, parapsoriasis lichenoides. Poikiloderma of Civatte, reticulated pigmentation and telangiectasia of the sides of the cheeks and neck; common in middle-aged women. Synonym: Civatte's disease. (05 Mar 2000) |
| parakinesia | Parakinesis Any motor abnormality. Synonym: paracinesia, paracinesis. Origin: para-+ G. Kinesis, movement (05 Mar 2000) |
| paralactic | <physiology> Designating an acid called paralactic acid. See Lactic acid, under Lactic. Origin: Pref. Para- + lactic. Source: Websters Dictionary (01 Mar 1998) |
| paralalia | Any speech defect; especially one in which one letter is habitually substituted for another. Origin: para-+ G. Lalia, talking (05 Mar 2000) |
| paralalia literalis | <physiology> A disturbance in the formation of sounds. It is due essentially to long-continued spasmodic contraction of the diaphragm, by which expiration is preented, and hence it may be considered as a spasmodic inspiration. Source: Websters Dictionary (01 Mar 1998) |
| paralambdacism | Mispronunciation of the letter l, or the substitution of some other letter for it. See: lambdacism. Origin: para-+ G. Lambda, letter l (05 Mar 2000) |