Silent reading: reading text silently with one's eyes (not aloud). The opposite of oral reading (音読).
授業の最初に一分間の黙読をしてください。
Please do one minute of silent reading at the start of class.
彼女は黙読で速く長文を理解する訓練をしている。
She is training to understand long passages quickly through silent reading.
試験中は黙読して問題を解いた。
During the exam I read the questions silently and solved them.