Electron, Electronic
noun
An electricity child. What is a really small part of electricity? What makes up electricity? That would be the electron. This word can also refer to things that are electronic as well.
でんし
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
カレーを電子レンジに入れました。
I put the curry in the microwave.
その電子ピアノを直すのには、いくらかかりますか？
How much does it cost to fix the electronic piano?
一年前から、紙の本ではなくて電子リーダーやタブレットで本をよんでいます。
Since a year ago, I've been reading books with an electronic reader and a tablet, not paper books.
電子は目で見ることができません。
You can't see electrons with your eyes.