- 1. A curved line or segment of a circle. 2. Continuous luminous passage of an electric current in a gas or vacuum between two or more separated carbon or other electrodes. [L. arcus, a bow]- auricular a., binauricular a. a line carried over the cranium from the center of one external auditory meatus to that of the other. SYN: interauricular a..- bregmatolambdoid a. the line running along the sagittal suture from the bregma to the apex of the lambdoid suture.- flame a. an a. between two impregnated electrodes that causes volatilization of the core with resultant flame.- longitudinal a. of skull the line carried over the skull in the midline from the nasion to the opisthion.- mercury a. an electric discharge through mercury vapor between electrodes, one of which is usually mercury; provides a rich source of therapeutic ultraviolet rays; the containing tube is usually quartz; may also be glass with a fluorite window.- nasobregmatic a. a line running through the midline of the forehead from the nasion to the bregma.- naso- occipital a. the a. in the midline from the root of the nose to the inferior limit of the external occipital protuberance.- pulmonary a. radiographically displayed contour of main pulmonary artery on frontal chest radiograph.- reflex a. the route followed by nerve impulses in the production of a reflex act, from the peripheral receptor organ through the afferent nerve to the central nervous system synapse and then through the efferent nerve to the effector organ.- Riolan a. 1. SYN: intestinal arterial arcades, under arcade. 2. SYN: marginal artery of colon. SEE ALSO: Riolan anastomosis. 3. SYN: Riolan anastomosis.* * *absolute reticulocyte count; accelerating rate calorimetry; Accreditation Review Council; acquired immunodeficiency syndrome-related complex; active renin concentration; AIDS-related complex; American Red Cross; anomalous retinal correspondence; antigen reactive cell; arcuate; Arthritis Rehabilitation Center; arthrogryposis-renal dysfunction-cholestasis [syndrome]; Association for Retarded Children; Association for Retarded Citizens; atypical reparative changes; automatic exposure control
* * *ARC abbr1) AIDS-related complex2) American Red Cross
* * *
* * *AIDS-related complex; American Red Cross; anomalous retinal correspondence.
Medical dictionary. 2011.