depth Meaning, Definition & Usage

  1. noun the extent downward or backward or inward
    deepness.
    • the depth of the water
    • depth of a shelf
    • depth of a closet
  2. noun degree of psychological or intellectual profundity
  3. noun (usually plural) the deepest and most remote part
    • from the depths of darkest Africa
    • signals received from the depths of space
  4. noun (usually plural) a low moral state
    • he had sunk to the depths of addiction
  5. noun the intellectual ability to penetrate deeply into ideas
    profundity; astuteness; profoundness; deepness.
  6. noun the attribute or quality of being deep, strong, or intense
    • the depth of his breathing
    • the depth of his sighs," "the depth of his emotion

WordNet

Depth noun
Etymology
From Deep; akin to D. diepte, Icel. dpt, dp, Goth. diupia.
Definitions
  1. The quality of being deep; deepness; perpendicular measurement downward from the surface,or horizontal measurement backward from the front; as, the depth of a river; the depth of a body of troops.
  2. Profoundness; extent or degree of intensity; abundance; completeness; as, depth of knowledge, or color.
    Mindful of that heavenly love Which knows no end in depth or height. Keble.
  3. Lowness; as, depth of sound.
  4. That which is deep; a deep, or the deepest, part or place; the deep; the middle part; as, the depth of night, or of winter.
    From you unclouded depth above. Keble.
    The depth closed me round about. Jonah ii. 5.
  5. (Logic) The number of simple elements which an abstract conception or notion includes; the comprehension or content.
  6. (Horology) A pair of toothed wheels which work together. R.

Webster 1913