\ ˈdepth How to pronounce depth (audio) \
plural depths\ ˈdepths How to pronounce depths (audio) , ˈdep(t)s How to pronounce depths (audio) \

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
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 How to pronounce depthless (audio) \ adjective

Synonyms for depth


deepness, drop

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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 Institute will probably publish a more in-depth obituary in the coming days, spokeswoman Christina Beck told The Washington Post. Hannah Knowles, Washington Post, "U.S. scientist killed in Greece by man who raped her and left her in a cave, police say," 16 July 2019 The market research and advisory firm conducted 150 customer surveys and in-depth interviews. Ananya Bhattacharya, Quartz India, "Amazon’s Prime Day sale isn’t enough to make Indians forget Flipkart," 14 July 2019 An in-depth investigation by the Miami Herald in November uncovered police records alleging Epstein molested dozens of underage girls. CBS News, "Alan Dershowitz, Jeffrey Epstein's former lawyer, claims to have proof his accuser is lying," 10 July 2019 In November, the Miami Herald published an in-depth look at the 2007 deal that showed that Acosta – then the top federal prosecutor in Miami – was directly involved in negotiating a deal with Epstein's lawyers. Michael Collins, USA TODAY, "'We proceeded appropriately': Acosta defends role in controversial Jeffrey Epstein plea deal," 9 July 2019 Nearly every hospice center in the country that provided care to patients receiving Medicare benefits was part of the study, the most in-depth of its kind ever undertaken relating to hospice care. Michael Kosnar, NBC News, "Hundreds of hospice centers in U.S. get failing grades," 9 July 2019 In the column, Ballard opens up about what the Colts look for in a player, which includes scouting for intangibles such as preferred size at a position and instincts to play the position, as well as an in-depth look at character traits. Tyler Kraft, Indianapolis Star, "Chris Ballard opens up about Colts draft process in guest column," 8 July 2019 Attendees will get an in-depth look at Hasbro’s latest action figure offerings. San Diego Union-Tribune, "Comic-Con 2019: Here’s your Friday schedule," 5 July 2019 Check out quick reviews of five of the top models—from homeowner-grade appliances to gourmet options—or scroll deeper for more in-depth reviews of these and others, plus buying advice. Roy Berendsohn, Popular Mechanics, "These Are the Best Portable Grills of Summer 2019," 2 July 2019

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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More Definitions for depth



English Language Learners Definition of depth

: a distance below a surface
: the distance from the front of something to the back
: an area that exists far below a surface or far inside something : a deep place or area


\ ˈdepth How to pronounce depth (audio) \

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 How to pronounce depth (audio) \
plural depths\ ˈdepth How to pronounce depths (audio) , ˈdep(t)s How to pronounce depths (audio) \

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

What made you want to look up depth? Please tell us where you read or heard it (including the quote, if possible).


something desired as essential

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