ARC

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arc

 [ahrk]
a part of the circumference of a circle, or a regularly curved line.
binauricular arc the arc across the top of the head from one auricular point to the other.
reflex arc the circuit traveled by impulses producing a reflex action: receptor organ, afferent nerve, nerve center, efferent nerve, effector organ in a muscle; see also reflex.
Three-neuron reflex arc. From Dorland's, 2000.

ARC

Abbreviation for AIDS-related complex.

arc

(ark),
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 electrodes.
[L. arcus, a bow]

ARC

abbr.
1. AIDS-related complex
2. American Red Cross

ARC

noun A part of the circumference of a circle; a curve.

Abbreviation for:
absolute reticulocyte count
Accreditation Review Committee
Accreditation Review Council
Addiction Research Centre
addict rehabilitation counsellor
age-related cataract
Ageing Research Centre
aggregate of red (blood) cells
AIDS-related complex
AIDS-related condition
alcohol rehabilitation centre
American Red Cross (see there)
annual rate of change
Annual Report on Carcinogens
antigen responsive cells
Application Review Committee
Arthritis Rehabilitation Centre
Arthritis and Rheumatism Council (Medspeak-UK)
Association for Retarded Citizens
Association pour Recherche du Cancer (see there)
atypical reparative changes
Australian Resuscitation Council

Genetics
ARC. A gene on chromosome 8q24.3 that encodes a protein required for consolidating synaptic plasticity and forming long-term memory, as well as in stress fibre dynamics and cell migration. It regulates endocytosis of AMPA receptors in response to synaptic activity, and is required for homeostatic scaling of AMPA receptors. ARC also plays a role in regulating cell morphology and cytoskeletal organisation. It is also an older gene symbol for what is now designated as NOL3, see there.

Neurology
noun A circuit or loop.
 
Sports medicine
verb To move with curved trajectory.

ARC

AIDS-related complex, also
1. American Red Cross, see there.
2. Association pour Recherche du Cancer, see there.

ARC

Abbreviation for AIDS-related complex.

arc

(ahrk)
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]

arc

(ark) [L. arcus, bow]
1. A curved line; a portion of a circle.
2. An electric spark, esp. in defibrillation or cardioversion, that follows an unwanted or potentially hazardous pathway.

nuclear arc

Spiral patterns on the surface of the lens due to a concentric pattern of fiber growth.

painful arc

A portion of the range of motion in which pain is perceived during active movement of an extremity. Pain is usually due to pinching of soft tissues at only a specific portion of the range of motion and may be caused by tendonitis or bursitis.
Enlarge picture
REFLEX ARC FOR PATELLAR TENDON REFLEX

reflex arc

The path followed by a nerve impulse to produce a reflex action. The impulse originates in a receptor at the point of stimulation, passes through an afferent neuron or neurons to a reflex center in the brain or spinal cord, and from the center out through efferent neurons to the effector organ, where the response occurs.
See: illustration

ARC

Acronym for
1. AIDS-RELATED COMPLEX. A lesser form of AIDS, often preceding the fully developed condition.

ARC

Abbreviation for AIDS-related complex.

arc

(ahrk)
1. A curved line or segment of a circle.
See: arch, arcus, arcade
2. Continuous luminous passage of an electric current in a gas or vacuum between two or more separated electrodes.
[L. arcus, a bow]
References in periodicals archive ?
Radakovic, "Detection of series arcing in low-voltage electrical installations", European Trans.
Load Power Normal type [W] Min Max ([S.sub.n]) ([S.sub.n]) Heater 1000 0.0062 0.0068 Heater 2000 0.0061 0.0066 Dimmer 1000 0.0056 0.0063 1 PC 300 0.0025 0.0035 2 PCs 600 0.0025 0.0035 Copier 1200 0.0055 0.0058 Load Power Arcing type [W] Min Max ([S.sub.n]) ([S.sub.n]) Heater 1000 0.0040 0.0058 Heater 2000 0.0045 0.0058 Dimmer 1000 0.0011 0.0042 1 PC 300 0.0035 0.0095 2 PCs 600 0.0005 0.0045 Copier 1200 0.0050 0.0075 TABLE III.
Even more puzzling, no specific arcing standard defines whether or not arcing is acceptable in electrical products and, if so, to what degree.
These interrupters help to prevent arcing within homes and need to be tested using some sort of arc detection technology to ensure that they are in good working order.
This is due to the extreme number of variables inherent to an arcing condition.
The amount of voltage, rate of rise, polarity, and the waveform all affect the speed with which corona and arcing conditions occur.
Failure to produce a known repeatable arcing condition means hipot manufacturers cannot accurately calibrate the arc detection sensitivity scales.
The addition of arc detection circuitry allows manufacturers to test their products for both dielectric breakdown and arcing conditions during a hipot test.
Dielectric breakdown is considered a catastrophic failure of the DUT's insulation system while arcing may or may not be considered a failure condition.