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sugar
sugarnouna sweet, crystalline substance, C 1 2 H 2 2 O 1 1 , obtained chiefly from the juice of the sugarcane and the sugar beet, and present in sorghum, maple sap, etc.: used extensively as an ingredient and flavoring of certain foods and as a fermenting agent in the manufacture of certain alcoholic beverages; sucrose.
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Sugar
SugarnounAlan ( Michael ). Baron. born 1947, British electronics entrepreneur; chairman of Amstrad (1968–2008); noted for his BBC series The Apprentice (from 2005)
sugar
Americannoun
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a sweet, crystalline substance, C 1 2 H 2 2 O 1 1 , obtained chiefly from the juice of the sugarcane and the sugar beet, and present in sorghum, maple sap, etc.: used extensively as an ingredient and flavoring of certain foods and as a fermenting agent in the manufacture of certain alcoholic beverages; sucrose.
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Chemistry. a member of the same class of carbohydrates, as lactose, glucose, or fructose.
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(sometimes initial capital letter) an affectionate or familiar term of address, as to a child or a romantic partner (sometimes offensive when used to strangers, casual acquaintances, subordinates, etc., especially by a male to a female).
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a word formerly used in communications to represent the letter S.
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Slang. money.
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Slang. LSD
verb (used with object)
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to cover, sprinkle, mix, or sweeten with sugar.
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to make agreeable.
verb (used without object)
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to form sugar or sugar crystals.
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to make maple sugar.
verb phrase
noun
noun
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Also called: sucrose. saccharose. a white crystalline sweet carbohydrate, a disaccharide, found in many plants and extracted from sugar cane and sugar beet: it is used esp as a sweetening agent in food and drinks. Formula: C 12 H 22 O 11
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any of a class of simple water-soluble carbohydrates, such as sucrose, lactose, and fructose
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informal a term of affection, esp for one's sweetheart
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rare a slang word for money
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a slang name for LSD
verb
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(tr) to add sugar to; make sweet
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(tr) to cover or sprinkle with sugar
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(intr) to produce sugar
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to make something unpleasant more agreeable by adding something pleasant
the government stopped wage increases but sugared the pill by reducing taxes
Other Word Forms
Derived Forms
Conjugated Forms
Present
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has sugaredperfect 3rd person singular
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have sugaredperfect
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has been sugaringperfect progressive 3rd person singular
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is sugaringprogressive 3rd person singular
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are sugaringprogressive
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am sugaringprogressive 1st person singular
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have been sugaringperfect progressive
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sugaringparticiple
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sugarssingular 3rd person
Past
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had sugaredperfect
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was sugaringprogressive singular
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sugaredsimple
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sugaredparticiple
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were sugaringprogressive plural
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had been sugaringperfect progressive
Future
Etymology
Origin of sugar
1250–1300; Middle English sugre, sucre (noun) < Middle French sucre < Medieval Latin succārum < Italian zucchero < Arabic sukkar; obscurely akin to Persian shakar, Greek sákcharon ( see sacchar-)
Explanation
Sugar is the sweet stuff that makes candy and other treats extra delicious, but eating too much of it is bad for you. Sugar isn’t only a food, it’s also an essential part of living cells and a source of energy for all animals. There are two main senses of sugar. First is refined sugar — the crystals that sweeten and preserve many foods. This yummy stuff comes from the sugarcane and sugar beet plants, and really hit the scene in the 18th and 19th centuries when sugar plantations spread and more people could get sugar. The other kind of sugar refers to biochemistry, and these sugars are an important part of the cells of all living things.
Vocabulary lists containing sugar
Matter and Energy Flow in Organisms - Introductory
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National Cookie Day
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Matter and Energy Flow in Organisms - Middle School
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Compared with healthy control samples, Alzheimer's brain specimens showed substantially higher levels of sugar attachment to proteins.
From Science Daily • Jun. 10, 2026
Once in the brain, it can contribute to biochemical pathways involved in building complex sugar structures on proteins.
From Science Daily • Jun. 10, 2026
She also checks her blood sugar, for her diabetes, and to see how much water she is drinking, for her kidneys.
From The Wall Street Journal • Jun. 9, 2026
Wheat, rice, cotton, sugar, cocoa and palm-oil production may be hit the hardest.
From MarketWatch • Jun. 8, 2026
In December 1944, Lulu assembled a truckload of rice, beans, sugar, peanuts, canned goods, salted fish, and candies for the prisoners of the Los Baños internment camp.
From "At Last She Stood" by Erin Entrada Kelly
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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.