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Definition of the noun lactose

What does lactose mean as a name of something?

noun - plural: lactoses

  1. a sugar comprising one glucose molecule linked to a galactose molecule; occurs only in milk
    • example: cow's milk contains about 4.7% lactose
    • lexical domain: Substances - nouns denoting substances
    • synonym of lactose: milk sugar
    • more generic word: disaccharide = any of a variety of carbohydrates that yield two monosaccharide molecules on complete hydrolysis


Lactose is a disaccharide sugar derived from galactose and glucose that is found in milk. Lactose makes up around 2–8% of milk, although the amount varies among species and individuals, and milk with a reduced amount of lactose also exists. It is extracted from sweet or sour whey. The name comes from lac or lactis, the Latin word for milk, plus the -ose ending used to name sugars. It has a formula of C₁₂H₂₂O₁₁.

  • also known as LACS, alpha-Lactose, Aletobiose, Anhydrous lactose, Galactinum, Lactin, Lactobiose, Milk sugar, Osmolactan, Saccharum lactin

Phrases with Lactose

  1. Lactose Intolerant
  2. lactose intolerance

Printed dictionaries and other books with definitions for Lactose

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Google previewYeast technology (2012)

by Gerald Reed

Lactose is the principal sugar present in whey. However, baker's yeast, S. cerevisiae, does...

Lactose is a disaccharide like maltose whose uptake and utilization is under the control of the polymeric gene system. However, unlike sucrose and ...

Google previewCooking for the Specific Carbohydrate Diet (2013)

Over 100 Easy, Healthy, and Delicious Recipes that are Sugar-Free, Gluten-Free, and Grain-Free by Erica Kerwien

Lactose is the sugar found in dairy products such as milk, cheese, and yogurt. Because lactose is a complex sugar, it's more difficult than simple sugars to digest when you have an injured digestive system. In general when following SCD, you ...

Google previewCrash Course Paediatrics (2013)

by Rajat Kapoor, Katy I. Barnes

Lactose is the predominant disaccharide in milk and requires the intestinal brush-border enzyme lactase for its digestion.

Google previewHome-Prepared Dog and Cat Diets (2011)

by Patricia Schenck

Lactose is the primary carbohydrate inmilk, butit is about30% lowerin dog's milkas compared tocow's milk.Lactose is easily absorbed after digestion. Colostrum is very high in calcium, butthe calcium content decreases in subsequent milk.

Google previewAdvanced Techniques in Diagnostic Microbiology (2007)

by Yi-Wei Tang, Charles W. Stratton

For example, it is very likely that an organism that grows on MacConkey agar plate and ferments lactose is a member of the family Enterobacteriaceae or that an oxidase-positive non–lactose fermenting Gram-negative rod that has distinct ...

Google previewThe Elimination Diet Workbook (2014)

A Personal Approach to Determining Your Food Allergies by Maggie Moon, MS, RDN

Lactose is a two-part sugar (aka a disaccharide) in milk, that is made of glucose and galactose. Lactose intolerance is a digestive intolerance to a sugar. For more on sensitivities to sugars, including other table sugar and fruit sugars, check out ...

Google previewTamime and Robinson's Yoghurt (2007)

Science and Technology by A. Y. Tamime, R K Robinson

lactose is the main sugar present in 7 Biochemistry of fermentation 7.1 Introduction 7.2 Carbohydrate metabolism.

Google previewThe MCAT Biology Book (2015)

by Nancy Morvillo, Matthew Schmidt

Lactose is a disaccharide, and ribose is a monosaccharide. Chapter 3 Solutions 1.

Google previewThe Cambridge Diet (2012)

A Manual for Practitioners by J. Marks, A.N Howard

Lactose is the primary carbohydrate.

Google previewDictionary of Food Ingredients (2013)

by Robert S. Igoe

Lactase Enzyme Preparation from Kluyveromyces lactis An enzyme preparation used to convert lactose to glucose and galactose. It is derived from the nonpathogenic, nontoxicogenic yeast Kluyveromyces ...

Google previewThe Encyclopedia of Nutrition and Good Health (2003)

by Robert A. Ronzio

Lactic acid bacteria ferment milk sugar (LACTOSE) in the formation of cottage cheese, YOGURT, and sour milk. Fermentation in SAUERKRAUT and related food processing yields lactic acid, which acts as a preservative. Lactic acid is naturally ...

Google previewBailliere's Midwives' Dictionary E-Book (2012)

by Denise Tiran

lactose milk ...

Online dictionaries and encyclopedias with entries for Lactose

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Photos about Lactose

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Celestial Lactose

Photo credit: zim2411

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Small photo of Organic ingredients, protein diet, nutritious lactose, healthy food, dairy products concept - male cook holds bottle milk. Serious chef or confectioner points hand at fresh milk for preparing dessertsSmall photo of Chef with confident face in white uniform presents milk. Best drink is milk. Man with beard and mustache holds bottle with milkshake or yogurt. Healthy food to your table. Nutritious lactose concept.Small photo of Lactose and non-lactose fermentors colonies of enteric bacteria on Macconkey agar plate.Small photo of Lactose and non-lactose fermentors colonies of enteric bacteria on MacConkey agar plate.Small photo of Lactose and non-lactose fermentors colonies of enteric bacteria on MacConkey agar plate.Small photo of Lactose and non-lactose fermentors colonies of enteric bacteria on MacConkey agar plate.Small photo of Lactose and non-lactose fermentors colonies of primary stool culture on MacConkey agar plate More...

Video language resources about Lactose

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Quotes about Lactose

My boyfriend and I live together, which means we don't have sex - ever. Now that the milk is free, we've both become lactose intolerant. (Margaret Cho)
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Scrabble value of L1A1C3T1O1S1E1

The value of this 7-letter word is 9 points. It is included in the first and second editions of the Official Scrabble Players Dictionary.

Anagrams of LACTOSE

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