Indentation (noun)

  1. The act or process of indenting or the state of being indented.
  2. A space or notch made by indenting; a hollow space.

Origin:

Mid 16th century (as an adjective in the sense "notched, jagged"): from latin indentare 'to notch', from in- 'into' + dent- 'tooth'.

Examples:

  1. The indentation in the wall was caused by a collision with a car.
  2. The indentation in the fabric made it look as though it had been folded.
  3. The indentation on the page indicated where the paragraph should start.
  4. The indentation in the wood was caused by a large knot.
  5. The indentation in the sand indicated where the object had fallen.
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