subderivative
nounEtymology From sub- + derivative.
1
Human sciences, Linguistics, Sciences A word derived indirectly, from a derivative of another.
- "Friendliness" is a subderivative: it is derived from "friendly", which comes from "friend".
2
Mathematics, Sciences A generalization of the notion of a derivative, defined as the slope of a line that either touches, or is everywhere below the line of a convex function.
- Related terms
- subdifferential, subgradient