New use,
New use, when used with respect to a product containing a particular active ingredient, means:
(1) Any proposed use pattern that would require the establishment of, the increase in, or the exemption from the requirement of a tolerance or food additive regulation under section 408 of the Federal Food, Drug and Cosmetic Act;
(2) Any aquatic, terrestrial, outdoor, or forestry use pattern, if no product containing the active ingredient is currently registered for that use pattern; or
(3) Any additional use pattern that would result in a significant increase in the level of exposure, or a change in the route of exposure, to the active ingredient of man or other organisms.
Source
40 CFR § 152.3
Scoping language
Terms used in this part have the same meaning as in the Act. In addition, the following terms have the meanings set forth in this section.