Definition

1. Noun:
   • A handheld optical instrument: A magnifying glass is a simple optical device consisting of a single convex lens mounted in a frame, typically with a handle. Its primary function is to produce a magnified, virtual image of an object, making small details appear larger and more distinct to the human eye.

Examples of Usage

• Noun:
  • The detective used a magnifying glass to examine the tiny fibers on the carpet.
  • For reading the fine print, she always kept a magnifying glass in her desk drawer.
  • The scientist studied the insect's wing structure under a powerful magnifying glass.

Advanced Usage

• "with a magnifying glass": used to emphasize very close or detailed examination.
  • The contract was scrutinized with a magnifying glass before it was signed.
• "like looking through a magnifying glass": a simile describing how something makes details or effects more intense or noticeable.
  • The intense media coverage acted like a magnifying glass on the politician's every word.

Variants and Related Words

• Magnifier (n): A more general term for any device that magnifies, which can include a magnifying glass.
  • A jeweler's loupe is a specialized type of magnifier.
• Hand lens (n): Another term for a simple magnifying glass, often used in scientific fields.
  • The geologist identified the mineral using a hand lens.

Synonyms

• Lens: (in this specific context) The optical component that provides magnification.
• Loupe: A small, high-power magnifying glass used by jewelers and watchmakers.

Related Phrases

• Magnifying power: A technical term referring to the degree of enlargement provided by the lens.
  • This magnifying glass has a magnifying power of 5x.
• Focus a magnifying glass: The action of adjusting the distance between the lens and the object to obtain a clear image.
  • You need to focus the magnifying glass properly to see the details.

Related Idioms

• Under the magnifying glass: Being subjected to intense scrutiny or examination.
  • The company's finances are under the magnifying glass after the scandal.

Noun

1. light microscope consisting of a single convex lens that is used to produce an enlarged image
   • the magnifying glass was invented by Roger Bacon in 1250