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a sweet carbohydrate of either animal or vegetable origin; the two principal groups are the disaccharides and the monosaccharides.
beet sugar sucrose from sugar beets.
blood sugar
1. glucose occurring in the blood.
2. the amount of glucose in the blood.
cane sugar sucrose from sugar cane.
fruit sugar fructose.
invert sugar a mixture of equal amounts of dextrose and fructose, obtained by hydrolyzing sucrose; used in solution as a parenteral nutrient.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.


(shu'găr), Avoid the colloquial substitution of this word for glucose unless the meaning is clear from the context.
One of the sugars, which see, pharmaceutical forms are compressible sugar and confectioner's sugar.
See also: sugars.
[G. sakcharon; L. saccharum]
Farlex Partner Medical Dictionary © Farlex 2012


1. A sweet crystalline or powdered substance, white when pure, consisting of sucrose obtained mainly from sugarcane and sugar beets and used in many foods, drinks, and medicines to improve their taste. Also called table sugar.
2. Any of a class of water-soluble crystalline carbohydrates, including sucrose and lactose, having a characteristically sweet taste and classified as monosaccharides, disaccharides, and trisaccharides.

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


A water-soluble, crystallizable carbohydrate that is the primary source of energy and structural components. See Amino sugar, Non-reducing sugar, Reducing sugar.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.


Colloquial usage for sucrose; pharmaceutic forms include compressible sugar and confectioner's sugar.
See also: sugars
[G. sakcharon; L. saccharum]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012


a simple form of CARBOHYDRATE, formed of MONOSACCHARIDE units. Such molecules can exist in either a straight chain or a ring form. The straight chain contains a C=O group; if this group is terminal the sugar has the properties of an aldehyde (aldose sugar), if nonterminal the sugar acts as a ketone (ketose sugar). Both aldose and ketose sugars can be oxidized and will reduce alkaline copper solutions (see FEHLING'S TEST, BENEDICT'S TEST). They are thus called REDUCING SUGARS. Several disaccharides such as maltose and lactose are also reducing sugars. Sucrose, however, is a nonreducing sugar in which the linkage of glucose and fructose masks the potential aldehyde group of glucose and the potential ketone group of fructose, so that no reduction occurs in the Fehling's and Benedict's tests.

The backbone of the sugar can be of varying lengths, containing as little as three carbons (triose sugars) but, more commonly five carbons (pentose sugar) and six carbons (hexose sugars).

Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005


One of the sugars, e.g., confectioners' sugar.
[G. sakcharon; L. saccharum]
Medical Dictionary for the Dental Professions © Farlex 2012

Patient discussion about sugar

Q. how high is to high sugar I have been to surgry 3 times in 2 months and I have had my sugar go over before but not like this. I went to the Dr and Hes not worried about it. In the morning it is running 124 to 143 and 2 hrs after I eat it is running 165 to 200. At the Dr office it only showed 5.6 and He said 6.5 and over is bad! I have never sugar this high ever! It is in the family, my Mom, her Mom, her Dad ECT. What do you all think about it!

A. It seems what the doctor was referring to at the office wasn't the blood glucose (sugar) measurements but rather HbA1c - a substance in the blood that reflects the sugar levels in the PAST 8-12 weeks. Surgery is a substantial stress to your body and thus can increase your blood sugar. The A1C reflects the average levels during that time so it may overcome the temporary elevation due to the surgery.

You may read more here:

Q. Is there any difference in sugar. Is there any difference in sugar between flavored milk and fruit drinks or carbonated soft drinks?

A. Yes …Flavored milk contains both natural and added sugars and has less added sugar than carbonated soft drinks. It has been found that flavored milk just contributes only 2-4 % of total added sugar in kid’s diets as compared to 50-60 percent or more by soft and fruit drinks.

Q. i have high sugar problem .. how can i reduce it to a normal levels? and what medications can help me?

A. You can watch your diet and limit the amount of sugar you consume (avoid sugar containing food and drinks). In addition, watching your weight and limiting the fat and carbohydrates in your diet is also very helpful. Daily physical activity is known to be very helpful for glucose level problems, and of course medication, if necessary. You should consult a doctor about which medications to take, depending on your glucose levels. It can be either pills or insulin injections.

More discussions about sugar
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References in periodicals archive ?
A lower consumption of inverted sugar (399.6 [+ or -] 279.5 mL) was reported, which differed significantly from the treatments sugar-cane juice (634.5 [+ or -] 134.1 mL) and sugar syrup (586.5 [+ or -] 185.6 mL).
Significant differences were observed in the beeswax construction area when sugar syrup was used (720.5 [+ or -] 371.2 [cm.sup.2]), which differed significantly from that of sugar-cane juice (424.8 [+ or -] 289.5 [cm.sup.2]), but not from control and inverted sugar treatments.
Significant differences were observed in the analysis of sugar-cane juice ashes (0.27 [+ or -] 0.02%) which differed significantly from sugar syrup ashes (0.01 [+ or -] 0.00%), but not from inverted sugar ashes (0.11 [+ or -] 0.04%).
In the case of dry matter, treatments differed significantly concerning inverted sugar (75.66 [+ or -] 0.75%), with the highest percentage, when compared with sugar syrup (53.84 [+ or -] 0.41%) and sugar-cane juice (15.94 [+ or -] 0.00%).
The analysis of total reducing sugars showed a higher rate for sugar syrup (41.52 [+ or -] 2.8%), which differed significantly from sugar-cane juice (21.15 [+ or -] 1.6%) and inverted sugar (0.82 [+ or -] 0.0%).
Labor leaders say, however, that sugar-cane producers are not the main beneficiaries of the high prices.
"There are very good reasons to eliminate the special treatment that the sugar-cane sector has enjoyed for so many years," said Sarmiento.
"If President Fox insists on exercising the veto, our sugar-cane production could decline to about 4 million [metric] tons," said Jose Cruz Romero, legal counsel of the CNPR.
Deputies Marco Antonio Torres and Juan Fernando Perdomo Bueno, both members of the former governing Partido Revolucionario Institucional (PRI), accused Fox of favoring soft-drink manufacturers over sugar-cane growers.
Sugar-cane producers made known their discontent with the Fox government's intention to veto the decree by holding a huge demonstration in Mexico City.
And vegetable and sugar-cane farmers have accepted paying a "fair share" of the cleanup costs.
For example, on 3,700 acres of sugar-cane fields in Palm Beach County being activated as "filtration marshes," wetland plants and wildlife are quickly taking over.