one of the qualities attributed by the mind to an object perceived, such as color, temperature, or taste.
Compare primary quality.
Origin of secondary quality
First recorded in 1690–1700
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
(in empiricist philosophy) those properties of objects that are explained in terms of the primary properties of their parts, such as heat in terms of the motion of molecules
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