depth

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. The condition or quality of being deep.
2. n. The extent, measurement, or dimension downward, backward, or inward: dove to a depth of 30 feet; shelves with enough depth to store the large boxes.
3. n. The measurement or sense of distance from an observation point, such as linear perspective in painting.
4. n. A deep part or place. Often used in the plural: the ocean depths; in the depths of the forest.
5. n. The most profound or intense part or stage: the depth of despair; an experience that touched the depths of tragedy.
6. n. Intensity; force: had not realized the depth of their feelings for one another.
7. n. The severest or worst part: in the depth of an economic depression.
8. n. A low point, level, or degree: Production has fallen to new depths.
9. n. Intellectual complexity or penetration; profundity: a novel of great depth.
10. n. The range of one's understanding or competence: I am out of my depth when it comes to cooking.
11. n. Strength held in reserve, especially a supply of skilled or capable replacements: a team with depth at every position.
12. n. The degree of richness or intensity: depth of color.
13. n. Lowness in pitch.
14. n. Complete detail; thoroughness: the depth of her research; an interview conducted in great depth.

Century Dictionary and Cyclopedia

1. n. Deepness; distance or extension, as measured From the surface or top downward: opposed to height: as, the depth of the ocean, of a mine, a ditch, etc.
2. n. A deep place, literally or figuratively; an abyss; the sea.
3. n. The deepest, innermost, or most central part of anything; the part most remote from the boundary or outer limits: as, the depth of winter or of night; in the depths of a jungle or a forest.
4. n. Abstruseness; obscurity; that which is not easily explored: as, the depth of a science.
5. n. Immensity; infinity; intensity.
6. n. Profoundness; profundity; extent of penetration, or of the capacity of penetrating: as, depth of understanding; depth of skill.
7. n. In painting, darkness and richness of tone: as, great depth of color.
8. n. In logic, the quantity of comprehension; the totality of those attributes which an idea involves in itself, and which cannot be taken away from it without destroying it. This use of the word was borrowed by Hamilton from certain late Greek writers.
9. n. Beyond one's depth, in water too deep for safety; hence, beyond one's ability or means.

Wiktionary

1. n. The vertical distance below a surface; the amount that something is deep.
2. n. The distance between the front and the back, as the depth of a drawer or closet.
3. n. figuratively The intensity, complexity, strength, seriousness or importance of an emotion, or situation.
4. n. computing, colors The total palette of available colors.
5. n. art, photography The property of appearing three-dimensional.
6. n. literary, usually plural The deepest part. (Usually of a body of water.)
7. n. literary, usually plural A very remote part.
8. n. The most severe part.
9. n. statistics The lower of the two ranks of a value in an ordered set of values.

GNU Webster's 1913

1. n. The quality of being deep; deepness; perpendicular measurement downward from the surface, or horizontal measurement backward from the front
2. n. Profoundness; extent or degree of intensity; abundance; completeness.
3. n. Lowness.
4. n. That which is deep; a deep, or the deepest, part or place; the deep; the middle part.
5. n. (Logic) The number of simple elements which an abstract conception or notion includes; the comprehension or content.
6. n. (Horology), rare A pair of toothed wheels which work together.
7. n. (Aëronautics) The perpendicular distance from the chord to the farthest point of an arched surface.
8. n. (Computers) the maximum number of times a type of procedure is reiteratively called before the last call is exited; -- of subroutines or procedures which are reentrant; -- used of call stacks.

WordNet 3.0

1. n. the intellectual ability to penetrate deeply into ideas
2. n. degree of psychological or intellectual profundity
3. n. (usually plural) a low moral state
4. n. (usually plural) the deepest and most remote part
5. n. the extent downward or backward or inward
6. n. the attribute or quality of being deep, strong, or intense