subderivative
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English[edit]
Etymology[edit]
sub- + derivative
Noun[edit]
subderivative (plural subderivatives)
- (linguistics) A word derived indirectly, from a derivative of another.
- "Friendliness" is a subderivative: it is derived from "friendly", which comes from "friend".
- (mathematics) 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.