the cost of one additional unit of any item produced or bought in quantity.
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Origin of marginal cost
First recorded in 1925–30
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Culture definitions for marginal cost
The change in total cost of production when an output is varied by one unit.
The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.