| actinism | (n) ปฏิกิริยาของแสงอาทิตย์ |
| actinism | (แอค' ทินิสซึม) n. คุณสมบัติการแผ่รังสีซึ่งมีผลทางเคมี |
| actinism |
| actinism | (n) the property of radiation that enables it to produce photochemical effects |
| Actinism | n. [ Gr. &unr_;, &unr_; ray. ] The property of radiant energy (found chiefly in solar or electric light) by which chemical changes are produced, as in photography. [ 1913 Webster ] |