photodissociation

[foh-toh-di-soh-see-ey-shuh n, -shee-]

noun

the dissociation or breakdown of a chemical compound by radiant energy.

Origin of photodissociation

First recorded in 1920–25; photo- + dissociation
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019