‘记住’ (jì zhù) is a compound verb meaning 'to remember firmly' or 'to commit to memory.' The first character, 记 (jì), means 'to record' or 'to note,' often implying mental recording; the second, 住 (zhù), functions as a resultative complement indicating completion or firmness — literally 'to hold in place.' Together, they convey the idea of mentally securing information so it won’t be forgotten. It’s commonly used for important facts, instructions, promises, names, or deadlines.

This verb is neutral in register and appears frequently in daily communication — from teachers reminding students ('Please remember the homework') to friends exchanging contact details. It implies intentionality and effort, distinguishing it from passive recall. Unlike the simpler 记 (jì) alone, which can mean 'to take notes' or 'to remember' more generally, 记住 emphasizes successful retention and active commitment.