| upland | <botany> Any area that does not qualify as a wetland because the associated hydrologic regime is not sufficiently wet to elicit development of vegetation, soils and/or hydrologic characteristics associated with wetlands. Such areas in floodplains are more appropriately termed nonwetlands. (09 Oct 1997) |
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| uplander | 1. One dwelling in the upland; hence, a countryman; a rustic. 2. <zoology> The upland sandpiper. Source: Websters Dictionary (01 Mar 1998) |
| uplift | <geology> A raising or upheaval of strata so as to disturb their regularity and uniformity, and to occasion folds, dislocations, and the like. Source: Websters Dictionary (01 Mar 1998) |
| upokororo | <zoology> An edible fresh water New Zealand fish (Prototroctes oxyrhynchus) of the family Haplochitonidae. In general appearance and habits, it resembles the northern lake whitefishes and trout. Synonym: grayling. Origin: From the native Maori name. Source: Websters Dictionary (01 Mar 1998) |
| upon | On; used in all the senses of that word, with which it is interchangeable. "Upon an hill of flowers." "Our host upon his stirrups stood anon." (Chaucer) "Thou shalt take of the blood that is upon the altar." (Ex. Xxix. 21) "The Philistines be upon thee, Samson." (Judg. Xvi. 9) "As I did stand my watch upon the hill." (Shak) "He made a great difference between people that did rebel upon wantonness, and them that did rebel upon want." (Bacon) "This advantage we lost upon the invention of firearms." (Addison) "Upon the whole, it will be necessary to avoid that perpetual repetition of the same epithets which we find in Homer." (Pope) "He had abandoned the frontiers, retiring upon Glasgow." (Sir. W. Scott) "Philip swore upon the Evangelists to abstain from aggression in my absence." (Landor) Upon conveys a more distinct notion that on carries with it of something that literally or metaphorically bears or supports. It is less employed than it used to be, on having for the most part taken its place. Some expressions formed with it belong only to old style; as, upon pity they were taken away; that is, in consequence of pity: upon the rate of thirty thousand; that is, amounting to the rate: to die upon the hand; that is, by means of the hand: he had a garment upon; that is, upon himself: the time is coming fast upon; that is, upon the present time. By the omission of its object, upon acquires an adverbial sense, as in the last two examples. To assure upon, to promise; to undertake. To come upon. See Come. To take upon, to assume. Origin: AS. Uppan, uppon; upp up + on, an, on. See Up, and On. Source: Websters Dictionary (01 Mar 1998) |
| upper | Being further up, literally or figuratively; higher in place, position, rank, dignity, or the like; superior; as, the upper lip; the upper side of a thing; the upper house of a legislature. The upper hand, the superiority; the advantage. See To have the upper hand, under Hand. Upper Bench, all those parts of the hull of a vessel that are properly above water. Upper world. The atmosphere. Heaven. This world; the earth; in distinction from the underworld. Source: Websters Dictionary (01 Mar 1998) |
| upper abdominal periosteal reflex | Percussing the lower margin of the costal cartilages in the nipple line causes a contraction of the ipsilateral abdominal muscles (inconstant). (05 Mar 2000) |
| upper airway | The portion of the respiratory tract that extends from the nares or mouth to and including the larynx. (05 Mar 2000) |
| upper extremity | The shoulder, arm, forearm, wrist, and hand. Synonym: membrum superius, superior limb, thoracic limb, upper extremity. (05 Mar 2000) |
| upper extremity of fibula | The superior extremity of the fibula, which articulates by a facet with the undersurface of the lateral condyle of the tibia. Synonym: caput fibulae, upper extremity of fibula. (05 Mar 2000) |
| upper eyelid | The superior, larger and more mobile of the two eyelids which covers most of the anterior surface of the eyeball, including the cornea, when closed; a portion of the lacrimal gland and the aponeurosis of the levator palpebrae superioris muscle extend into it, the muscle opening the closed eye and providing additional elevation when the gaze is directed upward. Synonym: palpebra superior, upper lid. (05 Mar 2000) |
| upper GI haemorrhage | <gastroenterology> Diagnostic considerations: duodenal ulcer (40%), gastric ulcer (10-20%), diffuse erosive gastritis (15-20%), oesophageal varices (10%), Mallory-Weiss tears (10%), gastric carcinoma (less than 5%) (25 Jun 1999) |
| upper GI series | <investigation, radiology> A series of X-rays of the oesophagus, stomach, and small intestine (upper gastrointestinal, or GI, tract) that are taken after the patient drinks a barium solution. (barium is a white, chalky substance that outlines the organs on the X-ray.) (12 Dec 1998) |
| upper hybrid waves | <radiobiology> Similar to lower hybrid waves, but at a higher frequency. Not truly propagating waves, but plasma oscillations. (09 Oct 1997) |
| upper jaw | The upper jaw bone, takes part in the formation of the orbit, hard palate and nasal cavity. (27 Sep 1997) |