红外

Traditional form:

紅外

Pinyin (reading):

hóngwài

Definitions:

• infrared (ray)

Characters:

• 红 - red, vermillion; to blush, to flush; popular
• 外 - out, outside, external; foreign; in addition

Traditional characters:

• 紅 - red, vermillion; to blush, to flush; popular
• 外 - out, outside, external; foreign; in addition