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differential equation an equation that contains differentials.
differential gear an arrangement of gears on the rear axle of an automobile that allows one wheel to turn faster than another during turns.
differentiate to perceive differences or distinctions between. [6 definitions]
differentiation the act of differentiating, or the process or condition of being differentiated. [2 definitions]
differently in another or new way. [2 definitions]
difficult hard to accomplish or understand. [3 definitions]
difficulty the quality or condition of being difficult. [6 definitions]
diffidence reticence; shyness.
diffident unsure of oneself; shy; demure. [2 definitions]
diffract to cause diffraction of, or undergo diffraction.
diffraction modification of light or other waves by partially obstructing them so that they bend around the obstruction and break into bands of different frequencies.
diffraction grating a set of equidistant parallel lines or grooves made very close together on glass or polished metal, used to diffract light and produce a spectrum.
diffuse to pour (a liquid or gas) or to allow to flow out and spread freely. [10 definitions]
diffusion the spreading or wide scattering of something. [3 definitions]
diffusive marked by diffusion.
dig to make a hole by removing dirt, sand, or the like. [8 definitions]
digest to break down or promote the breaking down of (food) into substances that can be absorbed by body tissues. [8 definitions]
digestible capable of being digested or absorbed.
digestion the process by which the body converts food into absorbable substances. [3 definitions]
digestive of or pertaining to digestion. [3 definitions]
digestive juice any or all of the fluids produced by the body to digest food, such as secretions by the salivary glands, stomach walls, pancreas, and liver.