When combined, 记号 (jìhào) literally means a “remembering mark” or a “recording sign”—a perfect description of its function.
While `记号` is primarily a functional word, its importance is rooted in the visual nature of the Chinese language itself. Chinese characters are, in essence, highly sophisticated `记号` that have evolved over millennia. This background gives the concept of “making a mark” a foundational role in communication. A helpful comparison for Western learners is to contrast `记号` with the English word “symbol.”
`记号` is a common, everyday word used in a variety of situations. It is generally neutral in connotation and can be used in both formal and informal contexts.
The most common mistake for learners is confusing `记号` with other words for “sign” or “symbol.”