21 CFR § 510.202 - Definitions.

---
identifier: "/us/cfr/t21/s510.202"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "21 CFR § 510.202 - Definitions."
title_number: 21
title_name: "Food and Drugs"
section_number: "510.202"
section_name: "Definitions."
chapter_name: "FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES"
subchapter_number: "E"
subchapter_name: "ANIMAL DRUGS, FEEDS, AND RELATED PRODUCTS"
part_number: "510"
part_name: "NEW ANIMAL DRUGS"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "21 U.S.C. 321, 331, 351, 352, 353, 360b, 371, 379e."
regulatory_source: "40 FR 13807, Mar. 27, 1975, unless otherwise noted."
cfr_part: "510"
---


# 510.202 Definitions.

The following definitions of terms apply when used in this subpart:

*CNADA* means an application for conditional approval of a new animal drug submitted under section 571 of the Federal Food, Drug, and Cosmetic Act, and includes all amendments and permissible supplements.

*Import tolerance* means a tolerance for a residue of a new animal drug not approved or conditionally approved for use in the United States, but present in any imported edible portion of any animal.

*NADA* means a new animal drug application submitted under section 512 of the Federal Food, Drug, and Cosmetic Act, including all amendments and permissible supplements, for approval of a new animal drug.

*Request* means a request to establish or amend an import tolerance.