红外

紅外

hóngwài

noun #16,160

Meanings

1 infrared (ray)

Characters

outside; beyond

Examples

这个遥控器使用红外信号。

Zhège yáokòngqì shǐyòng hóngwài xìnhào.

This remote control uses infrared signals.

红外线可以用来测量温度。

Hóngwàixiàn kěyǐ yòng lái cèliáng wēndù.

Infrared rays can be used to measure temperature.

Tips

memory

红外 literally means 'beyond red' — infrared light is beyond the red end of the visible spectrum. Similarly, ultraviolet is 紫外 (zǐwài, 'beyond purple').

Stroke Order

红 hóng

外 wài