noun, noun or participle which takes 'suru', intransitive verb
getting up; rising from bed
A somewhat formal or written term for the act of getting out of bed in the morning. In casual speech, 起きる is more common.
毎朝6時に起床する。
I get up at six every morning.
起床時間は7時です。
Wake-up time is seven o'clock.
起きる is the everyday verb for getting up. 起床 is more formal and often used in schedules, instructions, or written contexts.
From 起 (to rise) and 床 (bed). The kanji combination directly conveys the meaning of rising from bed.