\ 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 used in the phrase in deptha study will be made in deptha subject being discussed in depth [=thoroughly, comprehensively] — compare 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


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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 earthquake, which occurred at 12:12 p.m. Thursday, was centered about 19 miles north of Willow at a depth of nearly 25 miles, according to the Alaska Earthquake Center. Anchorage Daily News, "4.5 earthquake north of Willow shakes Southcentral Alaska," 26 Nov. 2020 Its dark color, teetering on the smoky edge of burnt, is critical to a gumbo’s depth of flavor. Bill Addison, Los Angeles Times, "Turkey bone gumbo is the answer for Thanksgiving leftovers (or the feast itself)," 19 Nov. 2020 The Five Deeps Expedition officially got underway just before Christmas of that year, when Vescovo set the Limiting Factor down on the bottom of the Puerto Rico Trench at a depth of 27,480 feet. Sunset Magazine, "“It Can Get Done”—Meet the 1st Man to Pilot a Submersible to the Bottom of All 5 Oceans," 19 Nov. 2020 The robotic fleet will survey water from the surface to a depth of 2,000 meters — more than a mile deep. Deborah Sullivan Brenna, Star Tribune, "Scripps Oceanography to build fleet of data-collecting robotic ocean floats," 14 Nov. 2020 Mariana Trench, piloting a one-man submarine to Earth’s darkest and possibly most alien locale at a record depth of 6.8 miles. San Diego Union-Tribune, "Our Voice Newsletter: Vol. 1, Issue 1," 13 Nov. 2020 The current world record is believed to have been set by American undersea explorer Victor Vescovo, who claimed to have reached a depth of 10,927 meters (35,853 feet) in May 2019. Ben Westcott, CNN, "China breaks national record for Mariana Trench manned-dive amid race for deep sea resources," 11 Nov. 2020 Deep passes are defined as throws with a target depth of at least 20 yards. Daniel Oyefusi,, "Defenses are forcing Ravens QB Lamar Jackson to adjust. ‘Small fixes’ could be the answer.," 6 Nov. 2020 Pour oil into a large pot to a depth of at least 2 inches. Tribune News Service, cleveland, "Time for tempura: Traditional and modern recipes for the Japanese favorite," 4 Nov. 2020

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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Time Traveler for depth

Time Traveler

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

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Statistics for depth

Last Updated

29 Nov 2020

Cite this Entry

“Depth.” Dictionary, Merriam-Webster, Accessed 3 Dec. 2020.

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More Definitions for depth


How to pronounce depth (audio)

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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