1. (n.) 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. (n.) Profoundness; extent or degree of intensity; abundance; completeness; as, depth of knowledge, or color.

3. (n.) Lowness; as, depth of sound.

4. (n.) 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.

5. (n.) The number of simple elements which an abstract conception or notion includes; the comprehension or content.

6. (n.) A pair of toothed wheels which work together.

French pitch Sophia abstruseness abysm abyss acumen amplitude area astuteness bigness bodily size body bottomless pit brain breadth brightness brilliance brilliancy broad-mindedness bulk caliber cavity chasm classical pitch coarseness complexity comprehensively corpulence coverage crater crevasse deep deeply deepness deeps depths diameter dimension dimensions distance through draft drop erudition expanse expansion extension extensively extent fatness gauge girth good understanding greatness grossness gulf height high pitch hole hollow in detail innerness inness insight intellect intelligence intensity intensively interiority internality internalization intricacy intrinsicality introversion intuition inwardness keenness key largeness length low pitch lowness magnitude mass measure measurement mellow wisdom nadir new philharmonic pitch note obscurity penetration perception perspicaciousness perspicacity philharmonic pitch philosophical pitch pit pitch profoundly profoundness profundity proportion proportions radius range reach reconditeness register richness ripe wisdom sagacity sageness sapience scale scope seasoned understanding sense shaft sharpness size sound understanding sounding spread standard pitch strength the third dimension thickness thoroughly tonality tone tune understanding vividness volume well width wisdom wiseness yawning abyss