Translation guide
The Japanese word for 'electron' is 電子 (でんし). This is a straightforward scientific term with no major pitfalls.
The negatively charged particle in an atom.
Standard term for 'electron' in all contexts, from physics to everyday technology.
電子は負の電荷を持つ。
An electron has a negative charge.
電子顕微鏡でウイルスを観察した。
We observed the virus with an electron microscope.