signal

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sig·nal

(sig'năl),
1. Something that causes an action or conveys information.
2. A DNA template sequence that alters RNA polymerase transcription.
3. The end product observed when a specific sequence of DNA or RNA is deleted by some method.
4. The message transmitted on binding of an agonist to a receptor.
Farlex Partner Medical Dictionary © Farlex 2012

signal

(sĭg′nəl)
n.
Biology A physical entity, such as a chemical or an electromagnetic wave, that activates a cell receptor and elicits a specific response.
v. sig·naled, sig·naling, sig·nals or sig·nalled or sig·nalling
v.tr.
To cause an effect in (a cell) by the activation of a receptor, as by a neurotransmitter or hormone.

sig′nal·er, sig′nal·ler n.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

signal

A measurable or recognisable indicator of an event or process.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

signal

Medtalk A measurable or recognizable indicator of an event or process. See Magnetic resonance signal, Sexual body signal.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

sig·nal

(sig'năl)
1. Something that causes an action.
2. A DNA template sequence that alters RNA polymerase transcription.
3. The end product observed when a specific sequence of DNA or RNA is deleted by some method.
4. Anything or action that communicates something.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
References in periodicals archive ?
At 25 Hz we can see signals of signaling system, and at 50 Hz we can see AC train traction signals [7].
Additionally, the data on IGF-1 signaling up-regulation in the present study might provide another explanation for the occurrence of cardiac fibrosis.
The state of the A, B, C and D signaling bits for all 24 channels of a DS1 signal in ESF format can be observed at one time.
The activity of calcium channels is regulated by a wide variety of intracellular signaling pathways.
These early expanders were often called converters, because they converted the downstream SCSI signaling scheme and were simply modeled in the system as a slight cable delay.
We are also studying signaling pathways involved in apoptosis, especially alterations in calcium homeostasis and its role in apoptosis.
Because data is encoded using 8b/10b encoding (an 80% efficient encoding used with digital differential signaling to maintain a constant average DC bias point), the effective maximum throughput is 150MB/sec.
Buried Servo Signaling Gives Precise Tape Position Information
The Wnt signaling molecules are present at other times in development, but early on, some of them carry the message, "Don't make heart," says Tzahor.
Orthogonal Frequency Division Modulation (OFDM) is a new technology that promises to overcome signaling transmission barriers and step up transmission speeds.
Through their tendril-like arms, these glia also alter the number of neural synapses and their signaling strength.
The improved reliability, capacity, and performance of ADR technology is possible at a low cost due to four separate tape storage innovations: buried servo signaling, multi-channel recording, true variable transfer rates, and enhanced data integrity.