This part of ISO/TS 80004 is applicable to the use of nanotechnologies in medical diagnostics and therapeutics. Terms relating to the applications of nanotechnology in healthcare might also be addressed in other parts of ISO/TS 80004 and in other documents. Terms relating to the exploitation of material features at the nanoscale for diagnostic or therapeutic purposes in relation to human disease come within the scope of this part of ISO/TS 80004. Nanoscale properties can be embodied in materials that contain nanoscale elements, or are themselves of nanoscale dimensions. This part of ISO/TS 80004 does not address: — terms relating to the biological consequences of a nanomaterial, regardless of the nanomaterial's original purpose, or — terminology describing health, safety and environmental consequences. This part of ISO/TS 80004 provides consistent and unambiguous use of terms for healthcare professionals, manufacturers, consumers, technologists, patent agents, regulators, NGOs, and researchers, etc.