| umbo of tympanic membrane | The projection on the inner surface of the tympanic membrane at the end of the manubrium of the malleus; this corresponds to the most depressed point of the membrane, viewed laterally, that is commonly called the umbo. Synonym: umbo membranae tympani, umbo. (05 Mar 2000) |
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| umbra | Origin: L, a shadow. 1. <astronomy> The conical shadow projected from a planet or satellite, on the side opposite to the sun, within which a spectator could see no portion of the sun's disk; used in contradistinction from penumbra. See Penumbra. The central dark portion, or nucleus, of a sun spot. The fainter part of a sun spot; now more commonly called penumbra. 2. <zoology> Any one of several species of sciaenoid food fishes of the genus Umbrina, especially the Mediterranean species (U. Cirrhosa), which is highly esteemed as a market fish; called also ombre, and umbrine. <botany> Umbra tree, a tree (Phytolacca diocia) of the same genus as pokeweed. It is native of South America, but is now grown in southern Europe. It has large dark leaves, and a somber aspect. The juice of its berries is used for colouring wine. Source: Websters Dictionary (01 Mar 1998) |
| umbraculiferous | <botany> Bearing something like an open umbrella. Origin: L. Umbraculum umbrella (dim. Of umbra shade). Source: Websters Dictionary (01 Mar 1998) |
| umbraculiform | <botany> Having the form of anything that serves to shade, as a tree top, an umbrella, and the like; specifically, having the form of an umbrella; umbrella-shaped. Origin: L. Umbraculum any thing that furnishes shade, a bower, umbrella (dim. Of umbra a shade). Source: Websters Dictionary (01 Mar 1998) |
| umbrage | 1. Shade; shadow; obscurity; hence, that which affords a shade, as a screen of trees or foliage. "Where highest woods, impenetrable To star or sunlight, spread their umbrage broad." (Milton) 2. Shadowy resemblance; shadow. "The opinion carries no show of truth nor umbrage of reason on its side." (Woodward) 3. The feeling of being overshadowed; jealousy of another, as standing in one's light or way; hence, suspicion of injury or wrong; offense; resentment. "Which gave umbrage to wiser than myself." (Evelyn) "Persons who feel most umbrage from the overshadowing aristocracy." (Sir W. Scott) Origin: F. Ombrage shade, suspicion, umbrage, L. Umbraticus belonging to shade, fr. Umbra a shade. Cf. Umber, Umbratic. Source: Websters Dictionary (01 Mar 1998) |
| umbrageous | 1. Forming or affording a shade; shady; shaded; as, umbrageous trees or foliage. "Umbrageous grots and caves Of cool recess, o'er which the mantling vine Lays forth her purple grape." (Milton) 2. Not easily perceived, as if from being darkened or shaded; obscure. 3. Feeling jealousy or umbrage; taking, or disposed to take, umbrage; suspicious. Umbra"geously, Umbra"geousness. Origin: Cf. F. Ombraqeux shy, skittish, suspicious, in OF. Also, shady. See Umbrage. Source: Websters Dictionary (01 Mar 1998) |
| umbre | <zoology> See Umber. Source: Websters Dictionary (01 Mar 1998) |
| Umbre virus | An arbovirus related serologically to the Turlock virus. (05 Mar 2000) |
| umbrella | 1. A shade, screen, or guard, carried in the hand for sheltering the person from the rays of the sun, or from rain or snow. It is formed of silk, cotton, or other fabric, extended on strips of whalebone, steel, or other elastic material, inserted, or fastened to, a rod or stick by means of pivots or hinges, in such a way as to allow of being opened and closed with ease. See Parasol. "Underneath the umbrella's oily shed." (Gay) 2. <zoology> The umbrellalike disk, or swimming bell, of a jellyfish. 3. <zoology> Any marine tectibranchiate gastropod of the genus Umbrella, having an umbrella-shaped shell; called also umbrella shell. <zoology> Umbrella ant, a South American bird (Cephalopterus ornatus) of the family Cotingidae. It is black, with a large handsome crest consisting of a mass of soft, glossy blue feathers curved outward at the tips. It also has a cervical plume consisting of a long, cylindrical dermal process covered with soft hairy feathers. Called also dragoon bird. <botany> Umbrella leaf, a kind of magnolia (M. Umbrella) with the large leaves arranged in umbrellalike clusters at the ends of the branches. It is a native of Pennsylvania, Virginia, and Kentucky. Other plants in various countries are called by this name, especially a kind of screw pine (Pandanus odoratissimus). Origin: It. Umbrella, fr. Ombra a shade, L. Umbra; cf. L. Umbella a sunshade, a parasol. Cf. Umbel, Umbrage. Source: Websters Dictionary (01 Mar 1998) |
| umbrette | <zoology> See Umber. Origin: F. Ombrette. Source: Websters Dictionary (01 Mar 1998) |
| umbridae | A family of salmoniformes comprising the mudminnows. There are three genera: dallia, novumbra, and umbra with much disagreement about their taxonomic interrelations. The umbridae are freshwater fish inhabiting parts of the northern hemisphere. (nelson: fishes of the world) (12 Dec 1998) |
| umbrine | <zoology> See Umbra. Source: Websters Dictionary (01 Mar 1998) |
| umhofo | <zoology> An African two-horned rhinoceros (Atelodus, or Rhinoceros, simus). Synonym: chukuru, and white rhinoceros. Source: Websters Dictionary (01 Mar 1998) |
| umol | Symbol for micromole. (05 Mar 2000) |
| UMP | <abbreviation> Uridine 5'-monophosphate. (05 Mar 2000) |
| umbilicate |
resembling a navel.
출처: www.biology.lsu.edu/heydrjay/ThomasSay/terms.html
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| umbilicus |
The navel; the scar marking the point of attachment of the umbilical cord (the birth cord) in the foetus.
출처: www.pestmanagement.co.uk/lib/glossary/glossary_u.s...
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| umbilicus |
The hole around which the inner surface of a gastropod shell is coiled; imaginary axis passes through center of umbilicus. The opening at the base of a hollow columella, surrounded by the base of the body whorl.
출처: www.fish.washington.edu/naturemapping/mollusks/glo...
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| umbo |
(pl. umbones): The upper (or earliest) part of a bivalve valve, as seen from the outside, the youngest, terminal portion of which is the beak, best seen in an interior view of the valve.
출처: www.fish.washington.edu/naturemapping/mollusks/glo...
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| umbilicate |
Navel-like; with depressed cavity. Having an umbilicus.
출처: www.fish.washington.edu/naturemapping/mollusks/glo...
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| UM | black tropical American bird having a large overhanging crest and long feathered wattle |
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| UM | large Australasian fern with fanlike repeatedly forked fronds |
| UM | small deciduous open-crowned tree of eastern North America having creamy white flowers and large leaves in formations like umbrellas at the ends of branches |
| UM | medium-sized 2-needled pine of southern Europe having a spreading crown |
| UM | African sedge widely cultivated as an ornamental water plant for its terminal umbrellalike cluster of slender grasslike leaves |
| UM | late-blooming perennial plant of shale barrens of Virginia having flowers in flat-topped clusters |
| UM | rhizomatous perennial herb with large dramatic peltate leaves and white to bright pink flowers in round heads on leafless stems |
| UM | African sedge widely cultivated as an ornamental water plant for its terminal umbrellalike cluster of slender grasslike leaves |
| UM | a small tent with a single supporting pole and radiating metal ribs |
| UM | small deciduous open-crowned tree of eastern North America having creamy white flowers and large leaves in formations like umbrellas at the ends of branches |
| UM | erect evergreen shrub or small tree of Australia and northern Guinea having palmately compound leaves |
| UM | resembling an umbrella |