Prepatellar bursitis (also referred to as patellar bursitis) is a painful condition affecting the front of the kneecap (patella). The prepatellar bursa is usually very thin and serves as a cushion between the patella and your skin, protecting your kneecap and the soft tissue that holds it is place.repatellar Bursitis. Bursitis in the knee is a very painful condition in which a bursa sac becomes irritated and inflamed, affecting the bursa and the soft tissue around it. A bursa is a sac of synovial fluid, rich in protein and collagen.
Wiktionary(0.00 / 0 votes)Rate this definition: 1  sylvan(Noun) One that resides in the woods. 2  sylvan(Adjective) pertaining to the forest, or woodlands. 3  sylvan(Adjective) residing in a forest or wood.  sylvan(Adjective) wooded, or covered in forest.
Noun. 1. syphon-a tube running from the liquid in a vessel to a lower level outside the vessel so that atmospheric pressure forces the liquid through the tube. siphon.tube, tubing-conduit consisting of a long hollow object (usually cylindrical) used to hold and conduct objects or liquids or gases.yphon-convey, draw off, or empty by or as if by a siphon. siphon, siphon off. draw, take out-take liquid out of a container or well; She drew water from the barrel.