From Middle English depthe, from Old English *dīepþ (“depth”), from Proto-Germanic *diupiþō (“depth”), equivalent to deep + -th. Cognate with Scots deepth (“depth”), Saterland Frisian Djüpte (“depth”), West Frisian djipte (“depth”), Dutch diepte (“depth”), Low German Deepde (“depth”), Danish dybde (“depth”), Icelandic dýpt (“depth”), Gothic 𐌳𐌹𐌿𐍀𐌹𐌸𐌰 (diupiþa, “depth”).
- the vertical distance below a surface; the degree to which something is deep
- the distance between the front and the back, as the depth of a drawer or closet
- (figurative) the intensity, complexity, strength, seriousness or importance of an emotion, situation, etc.
- The depth of her misery was apparent to everyone.
- The depth of the crisis had been exaggerated.
- We were impressed by the depth of her knowledge.
- the depth of a sound
- (computing, colors) the total palette of available colors
- (art, photography) the property of appearing three-dimensional
- The depth of field in this picture is amazing.
- (literary, usually in the plural) the deepest part (usually of a body of water)
- The burning ship finally sunk into the depths.
- (literary, usually in the plural) a very remote part.
- Into the depths of the jungle...
- In the depths of the night,
- the most severe part
- in the depth of the crisis
- in the depths of winter
- (logic) the number of simple elements which an abstract conception or notion includes; the comprehension or content
- (horology) a pair of toothed wheels which work together
- (aeronautics) the perpendicular distance from the chord to the farthest point of an arched surface
- (statistics) the lower of the two ranks of a value in an ordered set of values