The phrase "infusion rate" refers to the speed or rate at which a liquid or medication is being delivered into the body through a tube or needle. It measures how fast the substance is being infused. Full definition
Additionally, while the lower infusion rates caused a significant increase in protein synthesis, further increases at the higher concentration levels showed smaller additional benefits. (fitnsync.com)
Prepared IV tubing and medications, as well as assembled infusion pumps and programmed infusion rates (jobhero.com)