depth / dep[unvoicedth]/ • n. 1. the distance from the top or surface of something to its bottom: shallow water of no more than 12 feet in depth. ∎ distance from the nearest to the farthest point of something or from the front to the back: the depth of the wardrobe. ∎ used to specify the distance below the top or surface of something to which someone or something percolates or at which something happens: [in sing.] loosen the soil to a depth of 8 inches. ∎ the apparent existence of three dimensions in a picture, photograph, or other two-dimensional representation; perspective: texture in a picture gives it depth. ∎ lowness of pitch: my voice had not yet acquired husky depths. 2. complexity and profundity of thought: the book has unexpected depth. ∎ extensive and detailed study or knowledge: third-year courses typically go into more depth. ∎ intensity of emotion, usually considered as a laudable quality: a man of compassion and depth of feeling. ∎ intensity of color: the wine shows good depth of color. 3. (the depths) a point far below the surface: he lifted the manhole cover and peered into the depths beneath. ∎ (also the depth) the worst or lowest part or state: 4 a.m. in the depths of winter | the putrid depths to which morality has sunk. ∎ a time when one's negative feelings are at their most intense: she was in the depths of despair. ∎ a place that is remote and inaccessible: a remote little village somewhere in the depths of Russia. 4. Sports the strength of a team in its reserve of substitute players: they have so much depth that they could afford the luxury of breaking in their players slowly. PHRASES: hidden depths usually admirable but previously unnoticed qualities of a person: hidden depths and insights within children. ∎ obscure or secretive aspects of a situation: the hidden depths of marital life. in depth in great detail; comprehensively and thoroughly: research students pursue a specific aspect of a subject in depth. See also in-depth. out of one's depth in water too deep to stand in. ∎ fig. beyond one's knowledge or ability to cope: the Governor is out of his depth, politically adrift.
See also 202. HEIGHTS .
- bathometer, bathymeter
- Oceanography. a device for ascertaining the depth of water.
- a device for ascertaining vertical currents in the deeper parts of the sea.
- the measurement of the depths of oceans, seas, or other large bodies of water. —bathymetric, bathymetrical. adj.
- bathyscaphe, bathyscape, bathyscaph
- Oceanography. a small, modified submarine for deep-sea exploration, usually having a spherical observation chamber fixed under a buoyancy chamber.
- Oceanography. a spherical diving apparatus from which to study deep-sea life.
- a device that records the temperature of water as a reflex of depth.
- 1. the depths or bottom of the sea.
- 2. organic life that inhabits the bottom of the sea.
- an apparatus for surveying the depths or bottom of the sea.
1. of a node in a tree. The length of the unique path from the root of the tree to the node. Thus if a node A is the root node then its depth is zero, otherwise its depth is one greater than that of its parent.
In some texts, depth of a node is synonymous with level of a node.
2. of a tree. The maximum depth of any node in a tree. The depth of a given tree will have the same numerical value as the height of that tree.