| PP | diphosphate group; emphysema [pink puffers]; near point of accommodation [Lat. punctum proximum]; pa... |
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| PPT | parietal pleural tissue; partial prothrombin time; peak-to-peak threshold; Pfeiffer-Palm-Teller [syn... |
| Pz | 4-phenylazobenzylycarbonyl; parietal midline electrode placement in electroencephalography |
| SPL | skin potential level; sound pressure level; splanchnic; spontaneous lesion; staphylococcal phage lys... |
| APA | action potential amplitude; aldosterone-producing adenoma; Ambulatory Pediatric Association; America... |
| wing-beating tumour | A coarse, irregular tumour that is most prominent when the limbs are held outstretched, reminiscent of a bird flapping its wings; due to up and down excursion of arm at abducted shoulder. Seen mainly with Wilson's disease. (05 Mar 2000) |
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| wing cell | One of the polyhedral cell's in the corneal epithelium beneath the surface layer. (05 Mar 2000) |
| wing-footed | 1. Having wings attached to the feet; as, wing-footed Mercury; hence, swift; moving with rapidity; fleet. 2. <zoology> Having part or all of the feet adapted for flying. Having the anterior lobes of the foot so modified as to form a pair of winglike swimming organs; said of the pteropod mollusks. Source: Websters Dictionary (01 Mar 1998) |
| wing-handed | <zoology> Having the anterior limbs or hands adapted for flight, as the bats and pterodactyls. Source: Websters Dictionary (01 Mar 1998) |
| wing-leaved | <botany> Having pinnate or pinnately divided leaves. Source: Websters Dictionary (01 Mar 1998) |
| wing of crista galli | A small lateral expansion of the ethmoid bone from the front of the crista galli on each side that articulates with the frontal bone and forms the foramen caecum. Synonym: ala cristae galli, alar process. (05 Mar 2000) |
| wing of ilium | The upper flaring portion of the ilium. Synonym: ala ossis ilii. (05 Mar 2000) |
| wing of nose | The outer more or less flaring wall of each nostril. Synonym: ala nasi, pinna nasi. (05 Mar 2000) |
| wing of sacrum | The upper surface of the lateral part of the sacrum adjacent to the body. Synonym: ala sacralis. (05 Mar 2000) |
| wing of vomer | An everted lip on either side of the upper border of the vomer, between which fits the rostrum of the sphenoid bone. Synonym: ala vomeris. (05 Mar 2000) |
| wing plate | The dorsal division of the lateral walls of the neural tube in the embryo; it gives rise to neurons relaying afferent impulses to higher centres; in the adult such neurons compose the sensory nuclei of the spinal cord and brainstem. Synonym: lamina alaris, alar plate of neural tube, dorsolateral plate of neural tube, lamina dorsalis, wing plate. (05 Mar 2000) |
| wing-shell | <zoology> Any one of various species of marine bivalve shells belonging to the genus Avicula, in which the hinge border projects like a wing. Any marine gastropod shell of the genus Strombus. See Strombus. Any pteropod shell. Source: Websters Dictionary (01 Mar 1998) |
| sea wing | <zoology> A wing shell (Avicula). Source: Websters Dictionary (01 Mar 1998) |
| standard-wing | <zoology> A curious paradise bird (Semioptera Wallacii) which has two long special feathers standing erect on each wing. Source: Websters Dictionary (01 Mar 1998) |
| Ingrassia's wing | One of a bilateral pair of triangular, pointed plates extending laterally from the anterolateral body of the sphenoid bone. Forming the posteriormost portion of the floor of the anterior cranial fossa, their sharp posterior edge forms the sphenoidal ridge separating anterior and middle cranial fossae. The medial end of the lesser wing attaches to the body by means of two pedicles, thus forming the optic canal. The wing itself forms the superior margin of the supraorbital fissure. Synonym: ala minor ossis sphenoidalis, ala orbitalis, Ingrassia's apophysis, Ingrassia's wing. (05 Mar 2000) |