老化

Traditional form:

老化

Pinyin (reading):

lǎohuà

Definitions:

• (of a person, population or material) to age
• (of knowledge) to become outdated

Characters:

• 老 - old, aged; experienced
• 化 - to change, to convert, to reform; -ize

Traditional characters:

• 老 - old, aged; experienced
• 化 - to change, to convert, to reform; -ize