arcus

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Related to arcus corneae: corneal arcus, arcus juvenilis

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.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

arcus

A 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.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved
References in periodicals archive ?
Trained nurses or medical laboratory technicians determined the presence of xanthelasmata and arcus corneae. The investigators collected and verified diagnoses of MI and ischemic heart disease using ICD-8 and ICD-10 codes by reviewing all hospital admissions, diagnoses entered in the national Danish Patient Registry, all causes of death entered in the national Danish Causes of Death Registry, and medical records from hospitals and general practitioners.
In contrast, the results show that arcus corneae is not a significant independent risk predictor for heart attack or heart disease.
For this analysis, the researchers included 12,745 people for whom complete information on all relevant variables, including xanthelasmata and arcus corneae, were available at baseline.