Definitions

1. noun

A change in the wavelength of light absorbed by a molecule that occurs when the molecule is associated with another molecule or ion.

“The scientists studied the phenomenon of bathochromy in the presence of different solvents.”

2. noun

A shift in the absorption maximum of a chromophore towards longer wavelengths when it is associated with another molecule.

“The chemist observed the bathochromy in the compound’s spectrum after adding a catalyst.”