Final answer:
Hyaluronate, or hyaluronic acid, is associated with the lubrication of joints, as it is a key component of synovial fluid that lubricates synovial joints.
Step-by-step explanation:
The substance associated with the lubrication of joints is hyaluronate. Specifically, hyaluronate or hyaluronic acid is a mucopolysaccharide, which is a key component of the synovial fluid. The synovial fluid acts as a lubricant in synovial joints, which allows for smoother movement between articulating bones. The presence of hyaluronic acid within the synovial fluid greatly enhances its lubricating properties, as well as contributes to the regulation of water balance in the joint and protection of articular cartilage.