katabatic adjective. 
[katǝ'batɪk] In sense 1 
catabatic. 
L19.[Greek katabatikos, from katabainein go down: see -IC. Cf. ANABATIC.]1.  Medicine. Gradually declining in severity. 
rare. Only in 
L19.2.  Meteorology. Of a wind: caused by local downward motion of (esp. cool dense) air. Opp. 
ANABATIC. 
L19.  [TahlilGaran] English Dictionary ▲