e/Marginal concepts

Information
has gloss	eng: In economics, marginal concepts are associated with a specific change in the quantity used of a good or service, as opposed to some notion of the over-all significance of that class of good or service, or of some total quantity thereof.
lexicalization	eng: Marginal concepts
instance of	c/Underlying principles of microeconomic behavior

Meaning
French
lexicalization	fra: Effet Marginal