noun

photon

photon

A photon is a particle of light.

A photon is a particle of light.

The sensor detects a single photon.

The sensor detects a single photon.

((countable)) a particle representing a quantum of light A photon carries a quantum of energy.

Synonyms: quantum, light particle

From Greek 'phos' (light) + '-on', a suffix for elementary particles (like electron). A particle of light.

Connect 'photo-' (light) with particle names like 'electron' and 'proton' to remember 'photon' is a light particle.

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