well-defined

Having a clean and distinct outline.

Accurately and precisely described or specified.

AMVAC Chemical Corp. spokesman Brian Maddox said the company does not sell naled into China and has “no idea how it may have been used or how much is applied. By contrast, the application of Naled in the US is well-defined by the USEPA label and is highly controlled to ensure compliance with rigorous US standards.”

Defined in an unambiguous and consistent way: specifically, such that any two objects implied to be identical are indeed identical.