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photostationary
photostationary adj. 
/ˌfəʊtə(ʊ)ˈsteɪʃən(ə)ri/,
Brit. /ˌfəʊtə(ʊ)ˈsteɪʃn̩(ə)ri/
, /ˌfəʊtə(ʊ)ˈsteɪʃn̩(ə)ri//ˌfəʊtə(ʊ)ˈsteɪʃən(ə)ri/U.S. /ˌfoʊdoʊˈsteɪʃəˌnɛri/
Chemistry designating or characterized by a state of equilibrium in a photochemical reaction in which the rate of dissociation of the reactants equals their rate of recombination./ˌfoʊdoʊˈsteɪʃəˌnɛri/ΘΚΠ
the world > matter > physics > electromagnetic radiation > light > scientific effects of light > [adjective] > of chemical action of light > of) accelerated (reaction) > in a state of equilibrium
photostationary1924
1924 Trans. Faraday Soc. 20 112 The decomposition of sulphur dioxide gas under the action of light radiated from a uviol mercury lamp has been investigated, and the resulting photostationary state, characteristic of a given set of conditions, determined.
1956 Science 4 May 795/1 These molecules are coresponsible for changes in the absorption spectrum of illuminated chlorophyll solutions in the photostationary state.
1987 A. Nickon & E. F. Silversmith Org. Chem.: Name Game iii. 43 This irradiation produced a Z-rich photostationary mixture that transported ions..from water to organic media.
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