auxochromic
/ɔːksəˈkrɒmɪk/ (AWK-suh-kroh-mik)
Definitions
1. adjective
relating to or designating a type of color change in which the color of a substance is affected by the presence of another substance or by the environment, but not by a change in the chemical composition of the substance itself
“The auxochromic properties of the dye made it useful for creating a wide range of colors in the textile industry.”
2. noun
a substance that exhibits auxochromic properties
“The auxochromic compound was used in the development of a new type of paint.”