名詞 photon:

1. a quantum of electromagnetic radiation; an elementary particle that is its own antiparticle

pho.ton

n.（名詞）
The quantum of electromagnetic energy, generally regarded as a discrete particle having zero mass, no electric charge, and an indefinitely long lifetime.See table at subatomic particle
光子，光量子：電磁能的量子，一般認為是有零質量、無電荷和不定長壽命的離散性粒子參見 subatomic particle
A unit of retinal illumination, equal to the amount of light that reaches the retina through square millimeter of pupil area from a surface having a brightness of candela per square meter.
光度：視網膜亮度單位，相當于每平方米有一燭光亮度的表面，通過一平方毫米的瞳孔區(qū)域，到達視網膜的光線數量

【引伸】
photon.ic
adj.（形容詞）