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indentation

[in-den-tey-shuh n]
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noun
  1. a cut, notch, or deep recess: various bays and indentations.
  2. a series of incisions or notches: the indentation of a maple leaf.
  3. a notching or being notched.
  4. indention(defs 1, 2).
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Origin of indentation

First recorded in 1715–25; indent1 + -ation
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for indentation

indentation

noun
  1. a hollowed, notched, or cut place, as on an edge or on a coastline
  2. a series of hollows, notches, or cuts
  3. the act of indenting or the condition of being indented
  4. Also called: indention, indent the leaving of space or the amount of space left between a margin and the start of an indented line
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for indentation

n.

1728, of margins or edges, extended form of indent (n.). Meaning "action of making a dent or impression" is from 1847.

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Online Etymology Dictionary, © 2010 Douglas Harper

indentation in Medicine

indentation

(ĭn′dĕn-tāshən)
n.
  1. A notch, a pit, or a depression.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

indentation in Culture

indentation

A space left between the left-hand margin of a line of type or handwriting and the beginning of a sentence or quotation. The beginning of a paragraph is usually indented.

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The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.