衰变

Traditional form:

衰變

Pinyin (reading):

shuāibiàn

Definitions:

• radioactive decay

Characters:

• 衰 - weak, feeble; to decline, to falter
• 变 - to change, to transform, to alter; rebel

Traditional characters:

• 衰 - weak, feeble; to decline, to falter
• 變 - to change, to transform, to alter; rebel