| Horner's syndrome | <syndrome> A nerve condition which involves a dropping eyelid (ptosis), constricted pupil, enophthalmos and lack of sweating on one side of the face. Often seen in association with injury (for example neck fracture, penetrating injury) to the cervical sympathetic nerve trunk in the neck or a Pancoast tumour involving both the upper and lower brachial plexus. (29 Sep 1997) |
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| Horner's teeth | Incisor teeth having a horizontal hypoplastic groove. (05 Mar 2000) |
| Horner, Johann | <person> Swiss ophthalmologist, 1831-1886. See: Horner's syndrome, Horner's pupil, Bernard-Horner syndrome, Horner-Trantas dots. (05 Mar 2000) |
| Horner, William | <person> U.S. Anatomist, 1793-1853. See: Horner's muscle, Horner's teeth. (05 Mar 2000) |
| Horner-Trantas dots | Evanescent white cellular infiltrates occurring in the bulbar form of vernal keratoconjunctivitis. (05 Mar 2000) |
| hornet | <zoology> A large, strong wasp. The European species (Vespa crabro) is of a dark brown and yellow colour. It is very pugnacious, and its sting is very severe. Its nest is constructed of a paperlike material, and the layers of comb are hung together by columns. The American white-faced hornet (V. Maculata) is larger and has similar habits. <zoology> Hornet fly, any dipterous insect of the genus Asilus, and allied genera, of which there are numerous species. They are large and fierce flies which capture bees and other insects, often larger than themselves, and suck their blood. Called also hawk fly, robber fly. To stir up a hornet's nest, to provoke the attack of a swarm of spiteful enemies or spirited critics. Origin: AS. Hyrnet; akin to OHG. Hornaz, hornuz, G. Horniss; perh. Akin to E. Horn, and named from the sound it makes as if blowing the horn; but more prob. Akin to D. Horzel, Lith. Szirszone, L. Crabo. Source: Websters Dictionary (01 Mar 1998) |
| hornet stings | Stings from hornets and other large stinging insects such as bees, yellow jackets and wasps can trigger allergic reactions varying greatly in severity. Avoidance and prompt treatment are essential. In selected cases, allergy injection therapy is highly effective. (the three a's of insect allergy are adrenaline, avoidance and allergist.) (12 Dec 1998) |
| hornfish | <zoology> The garfish or sea needle. Origin: AS. Hornfisc. Source: Websters Dictionary (01 Mar 1998) |
| hornification | Keratin formation or development of a horny layer; may also apply to premature formation of keratin. Synonym: cornification, hornification. (05 Mar 2000) |
| hornito | <geology> A low, oven-shaped mound, common in volcanic regions, and emitting smoke and vapors from its sides and summit. Origin: A dim. Fr. Sp. Horno oven, L. Furnus. See Furnace. Source: Websters Dictionary (01 Mar 1998) |
| hornotine | <zoology> A yearling; a bird of the year. Origin: L. Hornotinus of this year. Source: Websters Dictionary (01 Mar 1998) |
| hornowl | <zoology> See Horned Owl. Source: Websters Dictionary (01 Mar 1998) |
| hornpike | The garfish. Source: Websters Dictionary (01 Mar 1998) |
| hornpipe | An instrument of music formerly popular in Wales, consisting of a wooden pipe, with holes at intervals. It was so called because the bell at the open end was sometimes made of horn. A lively tune played on a hornpipe, for dancing; a tune adapted for such playing. "Many a hornpipe he tuned to his Phyllis." (Sir W. Raleigh) A dance performed, usually by one person, to such a tune, and popular among sailors. Source: Websters Dictionary (01 Mar 1998) |
| hornpout | <zoology> See Horned pout, under Horned. Source: Websters Dictionary (01 Mar 1998) |
| horn |
In telecommunications, the term horn has the following meanings: * In radio transmission, an open-ended waveguide, of increasing cross-sectional area, which radiates directly in a desired direction or feeds a reflector that forms a desired beam. ** Note 1: Horns may have one or more expansion curves, i.e., longitudinal cross sections, such as elliptical, conical, hyperbolic, or parabolic curves, and not necessarily the same expansion curve in each (E-plane and H-plane) cross section. ...
출처: en.wikipedia.org/wiki/Horn_(telecommunications)
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| horse chestnut |
The genus Aesculus comprises about 20-25 species of deciduous trees and shrubs native to the temperate northern hemisphere, with 7-10 species native to North America and 13-15 species native in Eurasia; there are also several natural hybrids. ...
출처: en.wikipedia.org/wiki/Horse_chestnut
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| horseshoe crab |
The horseshoe crab (Limulus polyphemus), also known as king crab, is an arthropod that is more closely related to spiders than crabs. They are most commonly found in the Gulf of Mexico and along the northern Atlantic coast. A Japanese variant (Tachypleus tridentatus) is found in the Seto Inland Sea, but is considered an endangered species through loss of habitat. They can grow up to 20 inches (51 cm), on a diet of mollusks, worms, and other invertebrates. ...
출처: en.wikipedia.org/wiki/Horseshoe_crab
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| horizons |
The horizon is the line that separates earth from sky. More precisely, it is the line that divides all of the directions you can possibly look into, into two categories: those which intersect the Earth, and those which do not. At many locations, the true horizon is obscured by trees, buildings, mountains, etc. The resulting intersection of earth and sky is instead known as the visible horizon. However, if you are on a ship at sea, the true horizon is strikingly apparent. ...
출처: en.wikipedia.org/wiki/Horizons
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| horizons |
Horizons was an attraction at Walt Disney World's EPCOT theme park in Orlando Florida. Its corporate sponsor was General Electric (which means they helped to finance the ride in turn for advertising opportunities) until 1993. It was a dark ride which explored some visions of the 21st century. Riders first experienced a 1950s perception of the future with android servants, then more modern ideas such as arid-zone agriculture, ocean colonization, and space colonization. ...
출처: en.wikipedia.org/wiki/Horizons_(Disney)
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| hor | N Pacific puffin |
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| hor | small pale-colored desert rattlesnake of southwestern United States |
| hor | screamer having a hornlike process projecting from the forehead |
| hor | insectivorous lizard with hornlike spines on the head and spiny scales on the body |
| hor | European viola with an unusually long corolla spur |
| hor | highly venomous viper of North Africa and southwest Asia having a horny spine above each eye |
| hor | whiff found in waters from the Bahamas and northern Gulf of Mexico to Brazil |
| hor | Devonian fossil plant considered one of the earliest forms of vascular land plants |
| hor | a pattern of symptoms occurring as a result of damage to nerves in the cervical region of the spine (drooping eyelids and constricted pupils and absence of facial sweating) |
| hor | large stinging paper wasp |
| hor | habitation for wasps or hornets |
| hor | a fine-grained metamorphic rock formed by the action of heat on clay rocks |