dys·thy·mi·a 
(dĭs-thīmē-ə)
(dĭs-thīmē-ə)n.
A mood disorder characterized by depressive symptoms that persist for two or more years, sometimes subsiding for short periods of time. Also called persistent depressive disorder.
[New Latin dysthȳmia, from Greek dusthūmiā, despondency : dus-, dys- + -thūmiā, -thymia.]
dys·thymic adj.
- commodity
- commodore
- "Commodore Vanderbilt."
- Commodus
- common
- commonage
- commonality
- commonalty
- common bile duct
- common carrier
- common cold
- common denominator
- common divisor
- commoner
- Common Era
- common factor
- common fraction
- common gender
- common ground
- common law
- common-law
- common-law marriage
- common logarithm
- commonly
- common market