Of or relating to photobiology.

Of a biochemical change: capable of being reversed by the action of light. Of a molecule: existing in different forms according to the wavelength…

Capable of undergoing reactivation (esp. reversal of genetic damage) under the influence of light; susceptible to photoreactivation.

Involved in or bringing about photoreactivation.

That protects against the harmful effects of (esp. ultraviolet) light; effective in photoprotection.

capable of undergoing photoconversion.

That absorbs light; capable of absorbing a photon.

= photoreactivable, adj.