1. Plural of multiphoton; multiple photons, especially in the context of nonlinear optical processes where two or more photons interact simultaneously with matter.
Usage: technical; physics; used in quantum mechanics and optics

Examples

• Multiphoton absorption occurs when a material absorbs two or more photons at once.
• The laser induced multiphoton ionization in the gas sample.
• Multiphoton microscopy uses infrared light to image deep tissue structures.
• Scientists studied multiphoton processes to understand nonlinear optical effects.
• The experiment demonstrated multiphoton excitation of fluorescent molecules.