the derivative of a function with respect to one of its variables with all other variables held constant.
Origin of partial derivative
First recorded in 1970–75
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
the derivative of a function of two or more variables with respect to one of the variables, the other or others being considered constant. Written ∂f/∂ x
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
The derivative with respect to a single variable of a function of two or more variables, regarding other variables as constants.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.