denote

In the world of mathematics, the symbol 'π' is used to denote the ratio of a circle's circumference.

(Chinese) 在数学界，符号“π”被用来表示圆周率。

A flashing red light on the electronic panel is intended to denote a critical hardware error.

(Chinese) 电子面板上闪烁的红光旨在表示严重的硬件错误。