retrofracted

from The Collaborative International Dictionary of English v.0.48

Retrofract \Re"tro*fract\, Retrofracted \Re"tro*fract`ed\, a.
   [Pref. retro- + L. fractus, p. p. of frangere to break.]
   (Bot.)
   Refracted; as, a retrofract stem.
   [1913 Webster]