Definition

1. Noun:
   • A monosaccharide sugar containing an aldehyde group: An aldose is a type of simple sugar (monosaccharide) whose molecular structure includes an aldehyde functional group (-CHO) or its cyclic hemiacetal form.

Usage

• The term "aldose" is used in biochemistry and organic chemistry to classify sugars based on their carbonyl functional group. It is a technical term.
• It is typically used as a countable noun (e.g., an aldose, several aldoses).

Examples

• Noun:
  • Glucose is a common aldose found in nature.
  • The chemical test distinguishes an aldose from a ketose.
  • Ribose, a five-carbon aldose, is a component of RNA.

Advanced Usage

• "Aldose sugar": This is a common collocation specifying the type of molecule, though "aldose" alone is sufficient.
  • Aldose sugars can undergo oxidation reactions.

Variants and Related Words

• Monosaccharide (n): The broader category of simple sugars to which aldoses belong.
• Ketose (n): The complementary category of monosaccharides containing a ketone group.
• Aldohexose (n): A six-carbon aldose (e.g., glucose).
• Aldopentose (n): A five-carbon aldose (e.g., ribose).

Synonyms

• Aldose sugar: (Technical synonym, essentially identical in meaning.)

Antonyms

• Ketose: A monosaccharide containing a ketone group instead of an aldehyde group.

Noun

1. a monosaccharide sugar that contains the aldehyde group or is hemiacetal