40 CFR § 26.202 - Definitions.

---
identifier: "/us/cfr/t40/s26.202"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 26.202 - Definitions."
title_number: 40
title_name: "Protection of Environment"
section_number: "26.202"
section_name: "Definitions."
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "A"
subchapter_name: "GENERAL"
part_number: "26"
part_name: "PROTECTION OF HUMAN SUBJECTS"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "5 U.S.C. 301; 7 U.S.C. 136a(a) and 136w(a)(1); 21 U.S.C. 346a(e)(1)(C); sec. 201, Pub. L. 109-54, 119 Stat. 531; and 42 U.S.C. 300v-1(b)."
regulatory_source: "56 FR 28012, 28022, June 18, 1991, unless otherwise noted."
cfr_part: "26"
---


# 26.202 Definitions.

The definitions in § 26.102 shall be applicable to this subpart as well. In addition, the definitions at 45 CFR 46.202(a) through (f) and at 45 CFR 46.202(h) are applicable to this subpart.

(a) *Research involving intentional exposure of a human subject* means a study of a substance in which the exposure to the substance experienced by a human subject participating in the study would not have occurred but for the human subject's participation in the study.

(b) A *child* is a person who has not attained the age of 18 years.