(mathematics) Field dealing with differentiable functions on differentiable manifolds.

plural of ordinary differential equation

(calculus, not comparable) Having a derivative, said of a function whose domain and codomain are manifolds.

plural of partial differential equation

plural of differential equation

(semantics, logic, taxonomy) A distinguishing feature which marks a species off from other members of the same genus.

plural of differentiability

growth medium that allows two or more organisms to be distinguished from one another by some parameter, such as growth vs. no-growth, distinguishing colors, distinguishing morphologies, etc.

The differential gear in an automobile, etc. / A qualitative or quantitative difference between similar or comparable things.

An arrangement of bevel gears permitting the rotation of two shafts at two different speeds whilst supplying the same torque; used on the drive axles or between the driven wheels of automobiles to aid cornering.