The word "photonosus" is not a commonly used term and may be unfamiliar to many. However, it can be broken down phonetically as "fo-toh-noh-suhs," with stress on the second syllable. The first two syllables correspond to the Greek roots "photon" and "noos," meaning light and mind, respectively. The final syllable "-sus" suggests a Latin origin and a suffix indicating abundance or fullness. Overall, "photonosus" might be understood as a term for a state characterized by a heightened perception of light or clarity of the mind.
Any disease caused by prolonged exposure to intense light.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.