Dictionary.com
Word of the Day
Crossword Solver
Everything After Z
Thesaurus.com
Dictionary.com
Thesaurus.com
Try Our Apps
definitions
Search
synonyms
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.
Show More
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018