phototonus

/foh-tot-n-uhs/US // foʊˈtɒt n əs //UK // (fəʊˈtɒtənəs) //

光子,光子体,光子仪,光子学

Definitions

n.名词 noun

1
Biology.
- : the normal condition of sensitiveness to light in organisms or their organs.
- : the irritability exhibited by cytoplasm when exposed to light of a certain intensity.