\ˈdepth \
plural depths\ˈdepths, ˈdep(t)s \

Definition of depth 

1a(1) : a deep place in a body of water fish living at great depths

(2) : a part that is far from the outside or surface the depths of the woods

(3) : abyss sense 1

b(1) : a profound or intense state (as of thought or feeling) the depths of sorrow also : a reprehensibly low condition hadn't realized that standards had fallen to such depths

(2) : the middle of a time (such as a season) the depths of winter

(3) : the worst part the depths of the depression

2 mathematics

a : the perpendicular (see perpendicular entry 1 sense 1b) measurement downward from a surface the depth of a swimming pool

b : the direct linear measurement from front to back the depth of a bookshelf

3 : the quality of being deep the depth of the pass

4 : the degree of intensity depth of a color also : the quality of being profound (as in insight) or full (as of knowledge) the depth of her experience

5 : the quality or state of being complete or thorough a study will be made in depth

6 US, sports : the quality of having many good players a team that lacks depth in the outfield

beyond one's depth or out of one's depth

: beyond the limits of one's capabilities an actor who is out of his depth in serious drama

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Other Words from depth

depthless \ˈdepth-ləs \ adjective

Examples of depth in a Sentence

These fish typically live at depths of 500 feet or more. Students will test the temperature of the water at different depths. The boat sank to a depth of several hundred feet. measuring the depth of the water the depth of a hole The pool has a depth of 12 feet. I began working at the factory during the depth of the Depression.
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Recent Examples on the Web

Some of those courses will run for 16 weeks, allowing for more in-depth English practice. Anya Van Wagtendonk,, "For these immigrants, flipping pancakes and learning English go hand-in-hand," 12 July 2018 Haney visited the Georgia SMU in October and did cell-front interviews with some prisoners and more in-depth, confidential interviews with 11 of them. Kate Brumback, The Seattle Times, "Report blasts Georgia solitary confinement as ‘draconian’," 10 July 2018 Russell Lee-Sung, who also is Newport-Mesa’s chief academic officer, was tasked in April with spearheading an in-depth review of the district’s safety procedures and policies. Priscella Vega,, "Report details Newport-Mesa’s steps to ramp up school safety," 28 June 2018 The Maricopa County Community College District Governing Board on Tuesday evening held a brief discussion on the northeast Mesa campus' future and plans to hold in-depth talks this fall. Lily Altavena, azcentral, "Could Mesa's Red Mountain campus close? Maricopa Community Colleges board to discuss future," 27 June 2018 From the opening cover, which in Florida features Florida running back Jordan Scarlett, FSU running back Cam Akers and Alabama’s Tua Tagovailoa, Athlon provides its readers with an in-depth preview of the 2018 season. Matt Murschel,, "A guide to top college football preview magazines," 13 July 2018 For more great storytelling and in-depth analysis, subscribe to the magazine—and get up to 94% off the cover price. Tom Verducci,, "The Star That Still Won't Shine: The Incredible, Unprecedented but Unseen Greatness of Mike Trout," 12 July 2018 The guidance on school violence is a follow-up to one published in 2002 in conjunction with an in-depth study of school attacks and perpetrators. Del Quentin Wilber, WSJ, "Secret Service Issues Guide Aimed at Preventing School Shootings," 12 July 2018 Here's my in-depth post today fully explaining the Heat's salary cap predicament, when and how Miami can bid for top free agents again, and what the Heat is trying to do about this quandary. Barry Jackson, miamiherald, "Heat signs a sharp-shooter who has impressed everyone this summer," 10 July 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'depth.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of depth

14th century, in the meaning defined at sense 1a(1)

History and Etymology for depth

Middle English, from dep deep

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Statistics for depth

Last Updated

27 Sep 2018

Look-up Popularity

Time Traveler for depth

The first known use of depth was in the 14th century

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More Definitions for depth


\ˈdepth \

Kids Definition of depth

1 : measurement from top to bottom or from front to back a cupboard's depth

2 : a place far below a surface or far inside something (as a sea or a forest) Some unusual fish live at great depths.

3 : the middle of time the depth of winter

4 : intensity sense 2 a depth of color No one can imagine the … depth of our emotion …— E. B. White, The Trumpet of the Swan

5 : abundance, completeness The speaker displayed a depth of knowledge.


\ˈdepth \
plural depths\ˈdepth, ˈdep(t)s \

Medical Definition of depth 

1 : the distance between upper and lower or between dorsal and ventral points of a body

2 : the quality of a state of consciousness, a bodily state, or a physiological function of being intense or complete the depth of anesthesia the depth of respiration

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More from Merriam-Webster on depth

Thesaurus: All synonyms and antonyms for depth

Spanish Central: Translation of depth

Nglish: Translation of depth for Spanish Speakers

Britannica English: Translation of depth for Arabic Speakers Encyclopedia article about depth

Comments on depth

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