- a transparent viscid lubricating fluid, secreted by the membrane lining joints, tendon sheaths, etc
WordReference Random House Unabridged Dictionary of American English © 2018
- Physiologya lubricating fluid resembling the white of an egg, secreted by certain membranes, as those of the joints.
- Neo-Latin, equivalent. to syn- syn- + Latin ōv- (stem of ōvum egg1) + -ia -ia