| 释义 |
arcus
Thesaurus| Noun | 1. | arcus - a whitish deposit in the shape of an arc that is sometimes seen in the corneaarcus seniliscornea - the transparent dome-shaped anterior portion of the outer covering of the eye; it covers the iris and pupil and is continuous with the sclera |
arcus
arcus[′ar·kəs] (meteorology) A dense and horizontal roll-shaped accessory cloud, with more or less tattered edges, situated on the lower front part of the main cloud. arcusA low, horizontal cloud formation associated with the leading edge of thunderstorm outflow (i.e., gust front). Roll clouds and shelf clouds are both types of arcus clouds.arcus
arcus [ahr´kus] (pl. ar´cus) (L.) arch; bow.arcus adipo´sus arcus corneae.arcus cor´neae (arcus cornea´lis) a white or gray opaque ring in the corneal margin; it may be present at birth or appear in childhood (see arcus juvenilis), but the condition is particularly common in those over 50 years old (see arcus senilis). It results from cholesterol deposits in or hyaline degeneration of the corneal stroma and may be associated with ocular defects or with familial hyperlipidemia.arcus juveni´lis arcus corneae in young persons.arcus seni´lis arcus corneae in the elderly. (See Atlas 4, Part E).arch (arch), [TA] Any structure resembling a bent bow or an arc. In anatomy, any vaulted or archlike structure. See: arcus. Synonym(s): arcus [TA] [thru O. Fr. fr. L. arcus, bow] arch (ahrch) [TA] anatomy Any vaulted or archlike structure or arc.
Synonym(s): arcus [TA] . [thru O. Fr. fr. L. arcus, bow]arcus (ar'kus) plural.arcus [L. arcus, a bow] In anatomy, an arch. See: archarcus alveolaris mandibulaeThe arch formed by the alveolar process of the body of the mandible.arcus alveolaris maxillaeLimbus alveolaris.arcus dentalisDental arch.arcus juvenilisAn opaque ring about the periphery of the cornea similar to arcus senilis but occurring in the young. It may be due to hypercholesterolemia, corneal irritation or inflammation, or a congenital anomaly.  ARCUS SENILISarcus senilisAn opaque white ring about the periphery of the cornea, seen in the aged. It is caused by the deposit of fat granules in the cornea or by hyaline degeneration. See: illustrationarch (ahrch) [TA] Any structure resembling a bent bow or an arc. In anatomy, any vaulted or archlike structure.
Compare: dental arch
Synonym(s): arcus [TA] . [thru O. Fr. fr. L. arcus, bow]FinancialSeeARCHARCUS
| Acronym | Definition |
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| ARCUS➣Arctic Research Consortium of the United States | | ARCUS➣Archaeological Research and Consultancy at the University of Sheffield (UK) | | ARCUS➣Air Racing Council of United States | | ARCUS➣Actions en Regions de Cooperation Universitaires et Scientifique (French: Regional Initiatives of Academic and Scientific Cooperation) |
arcus
Related to arcus: corneal arcusSynonyms for arcusnoun a whitish deposit in the shape of an arc that is sometimes seen in the corneaSynonymsRelated Words |