What does photolytically mean?
Photolytically is an adverb used in scientific and technical writing to describe something happening by means of photolysis. Photolysis is a chemical process in which light energy causes a substance to break down or split into different products, often through the absorption of ultraviolet radiation. For example, a pollutant may decompose photolytically in the atmosphere, or a compound may be destroyed photolytically in laboratory conditions. The word is related to the adjectives photolytic and photolytic, as well as the noun photolysis. Because it identifies a specific light-driven mechanism rather than any reaction involving light, photolytically is especially useful in chemistry, environmental science, atmospheric research, and related technical fields. In less specialized writing, a more accessible phrase such as “broken down by light” may be preferable.
adverbIn a way that involves photolysis, especially the breaking down or dissociation of a chemical substance by light.
- By means of photolysis; in a manner involving the light-induced breakdown of a chemical substance.
"The compound decomposes photolytically when exposed to ultraviolet radiation."
"The dye is degraded photolytically by sunlight in the upper water column."
"These pollutants can break down photolytically when atmospheric ozone absorbs ultraviolet radiation."
When light strikes certain molecules, it can act like a microscopic hammer, splitting them into new chemical products.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does photolytically come from?
The adverb is formed from photolytic, which combines the combining form photo-, meaning light, with the Greek-derived element lytic, associated with lysis, “a loosening” or “dissolution.” The related noun photolysis names the process by which light causes a chemical substance to break apart. Related terms such as lysis, lytic, and hydrolysis reflect the same Greek root associated with splitting or dissolution.
Related word forms
How photolytically is actually used
A technical term used chiefly in chemistry, atmospheric science, and environmental science. It is more precise than simply saying that a substance changes in light, because it specifically identifies photolytic decomposition or dissociation.
Easily confused with photolytically
Photolytic is the adjective describing a process or reaction, whereas photolytically is the adverb describing how such a process or reaction occurs.
Photochemical refers broadly to chemical changes involving light, while photolytically specifically describes action involving the photolytic breakdown of a substance.