Photodynamic action

Definition

A process by which a photosensitizer, upon absorbing light energy, generates reactive species that can damage or kill cells.

Etymology

From Greek 'photo-', meaning 'light', and 'dynamic' meaning 'moving' or 'active'.

Example

Photodynamic action is used in some types of cancer treatment.

Related Terms

• Photosensitizer
• Reactive oxygen species
• Singlet oxygen

Usage Notes

Photodynamic action can be used to kill a variety of organisms, including bacteria, viruses, and even cancer cells, but it is not a common term in entomology or arachnology.