directional derivative
noun Mathematics.
the limit, as a function of several variables moving along a given line from one specified point to another on the line, of the difference in the functional values at the two points divided by the distance between the points.
Words nearby directional derivative
direction angle,
direction cosine,
direction finder,
direction number,
directional,
directional derivative,
directional drilling,
directional microphone,
directions,
directive,
directly