47 entries under expression topic. ×

2
Grotthuss-Draper law(noun, form, study, science)
2
Hund's rule of maximum multiplicity(noun, study, treatment, science)
2
Kasha's rule(noun, study, treatment, science)
2
Norrish reaction(noun, study, treatment, science)
2
Stark-Einstein law(noun, form, study, science)
2
Woodward-Hoffmann selection rule(noun, study, treatment, science)
2
absorption of infrared radiation(noun, form, study, science)
2
absorption of ultraviolet(noun, form, study, science)
2
absorption of visible light(noun, form, study, science)
2
activation barrier(noun, form, study, science)
2
chemical reaction(noun, form, study, science)
2
chemical reagent(noun, study, treatment, science)
2
chemical substance(noun, form, study, science)
2
conservation of angular momentum(noun, form, study, science)
2
electrocyclic reaction(noun, study, treatment, science)
2
excited state(noun, form, study, science)
2
excited state proton transfer(noun, study, treatment, science)
2
first law of photochemistry(noun, form, study, science)
2
frontier molecular orbital theory(noun, study, treatment, science)
2
ground state(noun, form, study, science)
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APASmart Define. (2013). photochemistry thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/photochemistry/thesaurus/narrower
ChicagoSmart Define. 2013. "photochemistry thesaurus" https://smartdefine.org/photochemistry/thesaurus/narrower (accessed September 26, 2026).
HarvardSmart Define 2013, photochemistry thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/photochemistry/thesaurus/narrower>.
MLASmart Define. "photochemistry thesaurus" 18 May 2013. Web. 26 September 2026. <https://smartdefine.org/photochemistry/thesaurus/narrower>