| undifferentiated sarcoma of liver | <radiology> Kiddies, age 4 - 15 yrs, M = F, complex hepatic mass, often hypovascular, most in right lobe, large ( more than 10 cm), ** Differential diagnosis: embryonal rhabdomyosarcoma (12 Dec 1998) |
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| undifferentiated type fever | A term applied to illnesses resulting from infection by any one of the arboviruses pathogenic for man, in which the only constant manifestation is fever; rash, lymphadenopathy, or arthralgia (alone or in combination) may occur in some individuals but not in others; some arboviruses may induce infections in which undifferentiated type fever is the only manifestation, whereas other arboviruses may induce in some persons only undifferentiated fever, and in other persons similar fever followed by secondary manifestations, e.g., a haemorrhagic fever or encephalitis. (05 Mar 2000) |
| undifferentiation | <pathology> A condition in which tumour or cancer cells lose normal cell organisation, function and differentiation. (09 Oct 1997) |
| undine | One of a class of fabled female water spirits who might receive a human soul by intermarrying with a mortal. Origin: G. Undine, or F. Ondin, ondine, from L. Unda a wave, water. Source: Websters Dictionary (01 Mar 1998) |
| undinism | A condition in which sexual thoughts are aroused by water, urine, and urination. Origin: Mod. L. Undina, fr. L. Unda, wave (05 Mar 2000) |
| undiversion | Surgical restoration of continuity in any organ system, the flow through which had previously been diverted; e.g., between the upper urinary tract and bladder after supravesical urinary diversion. (05 Mar 2000) |
| undivided | 1. Not divided; not separated or disunited; unbroken; whole; continuous; as, plains undivided by rivers or mountains. 2. Not set off, as a share in a firm; not made actually separate by division; as, a partner, owning one half in a firm, is said to own an undivided half so long as the business continues and his share is not set off to him. 3. Not directed or given to more than one object; as, undivided attention or affection. 4. <botany> Not lobed, cleft, or branched; entire. Source: Websters Dictionary (01 Mar 1998) |
| undoing | In psychology and psychiatry, an unconscious defense mechanism by which one symbolically acts out in reverse some earlier unacceptable behaviour. (05 Mar 2000) |
| undress | 1. To divest of clothes; to strip. 2. To divest of ornaments to disrobe. 3. <medicine> To take the dressing, or covering, from; as, to undress a wound. Origin: 1st pref. Un- + dress. 1. A loose, negligent dress; ordinary dress, as distinguished from full dress. 2. <astronomy> An authorised habitual dress of officers and soldiers, but not full-dress uniform. Undress parade, a substitute for dress parade, allowed in bad weather, the companies forming without arms, and the ceremony being shortened. Source: Websters Dictionary (01 Mar 1998) |
| undulant fever | <microbiology> A rare infection (less than 200 cases per year in the U.S.) caused by bacteria of the genus Brucella. Human infection results from occupational exposure to infected animals or by ingestion of infected milk, milk products or animal tissue. Symptoms are non-specific and include fever, malaise and weight loss. (27 Sep 1997) |
| undulate | Verb: To move in a wavelike motion. Adj., Wavy. (09 Oct 1997) |
| undulated | 1. Resembling, or in the nature of, waves; having a wavy surface; undulatory. 2. <botany> Waved obtusely up and down, near the margin, as a leaf or corolla; wavy. 3. <zoology> Formed with elevations and depressions resembling waves; having wavelike colour markings; as, an undulated shell. Source: Websters Dictionary (01 Mar 1998) |
| undulating fever | <microbiology> A rare infection (less than 200 cases per year in the U.S.) caused by bacteria of the genus Brucella. Human infection results from occupational exposure to infected animals or by ingestion of infected milk, milk products or animal tissue. Symptoms are non-specific and include fever, malaise and weight loss. (27 Sep 1997) |
| undulating membrane | Undulatory membrane, a locomotory organelle of certain flagellate (trypanosome and trichomonad) parasites, consisting of a finlike extension of the limiting membrane with the flagellar sheath; wavelike rippling of the undulating membrane produces a characteristic movement. (05 Mar 2000) |
| undulating pulse | A toneless pulse in which there is a succession of waves without character or force. Synonym: pulsus fluens. (05 Mar 2000) |