syn·o·vi·a 
(sĭ-nōvē-ə)
(sĭ-nōvē-ə)n.
A clear, viscid lubricating fluid secreted by membranes in joint cavities, sheaths of tendons, and bursae.
[New Latin, coined by Paracelsus.]
syn·ovi·al adj.
- discourage
- discourageable
- discouragement
- discourager
- discouragingly
- discourse
- discourser
- discourteous
- discourteously
- discourteousness
- discourtesy
- discover
- discoverable
- discoverer
- discovery
- discredit
- discreditable
- discreditably
- discreet
- discreetly
- discreetness
- discrepancy
- discrepant
- discrepantly
- discrete