Final answer:
According to WHMIS legislation, the term encompasses any product, material, or substance, not just chemicals. WHMIS regulations apply to a wide range of hazardous materials.
Step-by-step explanation:
The term encompassed by WHMIS legislation includes any product, material, or substance, not just chemicals. This means that WHMIS regulations apply to a wide range of hazardous materials, including solid waste, liquids, gases, dusts, vapors, fibers, mists, and fumes. For example, if a product or material poses a hazard to human health or the environment due to its quantity, concentration, or physical, chemical, or infectious characteristics, it would be considered within the scope of WHMIS legislation.