\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

The starting quarterback, Gene Willis, injured his knee, moving Sixkiller to No. 2 on the depth chart. Scott Hanson, The Seattle Times, "Husky icon Sonny Sixkiller elevated Seattle and UW with his passing arm," 19 Nov. 2018 Look for our own in-depth Battlefield V ray tracing tests to land soon. Brad Chacos, PCWorld, "RTX on! Battlefield V becomes the first game to support DXR real-time ray tracing," 14 Nov. 2018 Created by the people behind Planet Earth II and Blue Planet II, Dynasties is a five-part series that will give audiences an in-depth look at five different animals from across the globe. Gabe Bergado, Teen Vogue, "BBC Earth's "Dynasties" Is a Captivating Look Into the Animal Kingdom," 9 Nov. 2018 For this story, Ouster gave Ars an exclusive in-depth look at the technologies underlying its lidar units. Timothy B. Lee, Ars Technica, "Why millions of lasers on a chip could be the future of lidar," 8 Nov. 2018 Richard Bruce TurenChurchill & TurenTuren is a master at crafting in-depth tours of ports like Prague, calling on a network of journalists, expats, and other insiders who offer greater context beyond rote historical facts. Paul Brady, Condé Nast Traveler, "2018 Top Travel Specialists We Trust," 19 Oct. 2018 For an even more in-depth look at fertility, check out Marie Claire's Guide to Having a Baby, here. Jennifer Gerson, Marie Claire, "All Your Fertility Questions Answered," 1 Oct. 2018 If Brown rises to the top of the depth chart at right tackle, Hurst could then be a valuable backup who can play four of five positions. Edward Lee,, "Ravens 2018 position-by-position breakdown: offensive line," 13 July 2018 Behind Crowder on the depth chart are Josh Doctson and Paul Richardson. Michael Beller,, "Fantasy Football Players Who are More Valuable in PPR Leagues," 12 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

6 Dec 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

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