Definition

1. Noun:
   • The act or process of making a hole or holes through something: This refers to the action of piercing or punching a hole in a material.
   • A hole or series of holes made by or as if by piercing or boring: This refers to the physical hole(s) created by the perforating action.
   • A line of small holes in paper, film, etc., making it easy to tear: This is a specific, common application where perforations create a predetermined line of weakness for easy separation.

Examples of Usage

• Noun (Act/Process):

  • The perforation of the metal sheet was done with a laser.
  • Perforation is a key step in manufacturing some filters.

• Noun (Physical Hole(s)):

  • The X-ray showed a small perforation in the intestinal wall.
  • A perforation of the eardrum can affect hearing.

• Noun (Line for Tearing):

  • Tear along the perforation to remove the coupon.
  • Stamp sheets have perforations to make them easy to separate.

Advanced Usage

• "Perforation rate": In industrial contexts, this refers to the number or pattern of holes per unit area.

  • The screen's high perforation rate allows for excellent airflow.

• "To be at risk of perforation": Used in medical contexts to describe a condition where an organ or vessel might develop a hole.

  • The ulcer was at high risk of perforation.

Variants and Related Words

• Perforate (verb): To make a hole or holes in something by piercing it.

  • The machine is designed to perforate cardboard.

• Perforated (adjective): Pierced with a hole or holes.

  • She bought perforated baking paper.

• Perforator (noun): A tool or machine for making holes.

  • The clerk used a perforator to cancel the stamps.

Synonyms

• Puncture: A small hole made by a sharp object.
• Piercing: The act of making a hole by penetrating.
• Boring: Making a hole, especially with a rotating tool.

Related Phrases

• Perforation line: The line formed by a series of perforations.
  • Fold the paper crisply along the perforation line.

Idioms

(This word is highly technical/specific and is not commonly used in idiomatic expressions. Its usage is primarily literal.)

Noun

1. the act of punching a hole (especially a row of holes as for ease of separation)
2. a hole made in something
   • a perforation of the eardrum
3. a line of small holes for tearing at a particular place