[1] : The Collaborative International Dictionary of English v.0.48

verticillate \vertic"illate\ ?; 277, verticillated
\vertic"illa`ted\, a. see verticil. bot.  zool.
   arranged in a transverse whorl or whorls like the rays of a
   wheel; as, verticillate leaves of a plant; a verticillate
   shell.
   1913 webster
see also:
verticil 

[2] : WordNet (r) 2.0

verticillate
     adj : forming one or more whorls especially a whorl of leaves
           around a stem syn: verticillated, whorled
see also:
verticillated whorled 

Verticillate >> V Words
Verticillate, definition of term: Verticillate
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