Definition
周岁 (zhōu suì) is used for a person's exact age in completed years, especially for infants and children. 周年 (zhōu nián) refers to the anniversary of an event (e.g., a wedding or founding), not a person's age.
noun
one full year of age (used for exact age calculations, e.g., a child's first birthday)
Examples
- 周岁。Bǎobao xià gè yuè jiù mǎn zhōu suì le.The baby will be one year old next month.
- 周岁，。Tā jīnnián shíbā zhōu suì, yǐjīng chéngnián le.He is eighteen years old this year (full years) and already an adult.
- 周岁。Zhè zhāng biǎogé yào tiánxiě háizi de zhōu suì niánlíng.This form requires you to fill in the child's age in full years.
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