Meaning and use
3.1 This term is not intended to replace the requirements of similar definitions in certain other documents, but is intended to list the terms currently in widespread use and their context in relation to weathering.

ASTM G113-2022 Standard Terminology for Natural and Artificial Wind Erosion Testing of Nonmetallic Materials

Radius
1.1 This terminology standard covers terms related to durability testing of non-metallic materials using natural and artificial weathering exposure techniques.

1.2 It is the intent of this terminology standard to include those weathering terms that are widely used in ASTM and for which standard definitions seem desirable.

1.3 This international standard is based on internationally recognized standardization principles established in the Decision on Principles for the Development of International Standards, Guidelines and Recommendations issued by the WTO Committee on Technical Barriers to Trade.