### Question
What is the definition of son or daughter?


### Answer
The definition of **son or daughter** is as follows in *29 U.S.C. § 2611*:

> a biological, adopted, or foster child, a stepchild, a legal ward, or a child of a person standing in loco parentis, who is—


(A) under 18 years of age

#### Citation:
  - *29 U.S.C. § 2611*
  - Heading: **CHAPTER 28-FAMILY AND MEDICAL LEAVE > SUBCHAPTER I-GENERAL REQUIREMENTS FOR LEAVE**

