Derivative (finance)
Etymology
From Latin derivare, "to draw off water" (de-, "off," plus rivus, "a stream"). The literal image is a channel drawing its flow from a larger river; a derivative likewise draws its entire value from an underlying asset it is tapped into.
noun · /di-RIV-uh-tiv/
A financial contract whose value comes from the price of something else, such as a stock, currency, or commodity.
What it names
It explains how people can bet on the price of oil or wheat without ever owning a barrel or a bushel — and how such bets can quietly amplify risk across the system.
Example
The airline used a derivative to lock in fuel prices months in advance.
Related idea
A derivative is frequently the tool behind a hedge, letting a business fix a future price and remove uncertainty.
adjective · /di-RIV-uh-tiv/
Imitative and unoriginal — drawn from others’ work rather than genuinely new.
What it names
art or ideas that merely echo existing ones
Example
Critics found the novel derivative — a pale echo of better books.
Related idea
The opposite of an archetype or a true prototype.
noun · /di-RIV-uh-tiv/
In calculus, the rate at which one quantity changes with respect to another — the slope of a curve at a point.
What it names
instantaneous rate of change
Example
The derivative of position with respect to time is velocity.
Related idea
Every sense comes from “derive” — something drawn off from a prior source.