indicator

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indicator

 [in´dĭ-ka″ter]
1. the index finger, or the extensor muscle of the index finger.
2. any substance that indicates the appearance or disappearance of a chemical by a color change or attainment of a certain pH.
prognostic i's factors such as staging, tumor type, and laboratory studies that may indicate treatment effectiveness and outcomes.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

in·di·ca·tor

(in'di-kā'tŏr, -tōr),
1. In chemical analysis, a substance that changes color within a certain definite range of pH or oxidation potential, or in any way renders visible the completion of a chemical reaction, for example, litmus, phenolsulfonphthalein.
2. An isotope that is used as a tracer.
3. The labeled substance the distribution of which between reactants of a system is used to determine the amount of analyte present.
[L. one that points out]
Farlex Partner Medical Dictionary © Farlex 2012

indicator

(ĭn′dĭ-kā′tər)
n.
1. One that indicates, especially:
a. A pointer or an index.
b. An instrument used to monitor the operation or condition of an engine, furnace, electrical network, reservoir, or other physical system; a meter or gauge.
c. The needle, dial, or other registering device on such an instrument.
2. Chemistry Any of various substances, such as litmus or phenolphthalein, that indicate the presence, absence, or concentration of another substance or the degree of reaction between two or more substances by means of a characteristic change, especially in color.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

in·di·ca·tor

(in'di-kā-tŏr)
1. chemical analysis A substance that changes color within a certain definite range of pH or oxidation potential, or in any way renders visible the completion of a chemical reaction (e.g., litmus, phenolsulfonphthalein).
2. An isotope that is used as a tracer.
3. The labeled substance the distribution of which between reactants of a system is used to determine the amount of analyte present.
[L. one that points out]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

indicator

A substance that undergoes an observable change, usually a change of colour, when a chemical alteration occurs in its environment. Indicators may demonstrate changes in acidity, the presence of various substances, such as sugar or protein in body fluids, or alterations in the concentrations of substances. Indicators are widely used in chemistry and in clinical medicine.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005

in·di·ca·tor

(in'di-kā-tŏr)
1. In chemical analysis, a substance that changes color within a certain definite range of pH or oxidation potential, or in any way renders visible the completion of a chemical reaction, e.g., litmus.
2. An isotope that is used as a tracer.
[L. one that points out]
Medical Dictionary for the Dental Professions © Farlex 2012

Patient discussion about indicator

Q. What could be the reason? I do go for exercise but the result is not satisfactory to me although I followed good diet, timing etc. What could be the reason?

A. can you list in detail here what you do, what you eat? etc? Your successes and failures? Then we can help you a bit more. Maybe you have plateaued and need to change things up.

Q. What the reasons to the migraine?

A. A migraine headache has many triggers- among which are different foods (cheese, red wine), drinking coffee or caffeine containing beverages, lack of sleep, smoking, drinking alcohol, exposure to strong noise and more. There is also a genetic factor, and you see migraine more in people whose relatives suffer from it too.

Q. what do you think the reason would be? As per the latest statistics that 2 out of 150 kids born in the U.S. has autism, and the incidence rate is increasing, what do you think the reason would be?

A. The actual statistics is not 2 out of 150. It is 1 out of 150. I don't think autism is increasing, I think more children are being labeled as autistic - the condition is more well known than it was 20 years ago.

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References in periodicals archive ?
The latest report contains market indicators for last year until the second quarter of this year.
"These market indicators point to the strength of the residential sales market in Manhattan."
The evidence accumulated over the intermeeting period shows that spending is firming, although labor market indicators are mixed.