Source : Webster's Revised Unabridged Dictionary (1913)

Monocarpic \Mon`o*car"pic\, Monocarpous \Mon`o*car"pous\, a.
   [Mono- + Gr. ? fruit: cf. F. monocarpe.] (Bot.)
   Bearing fruit but once, and dying after fructification, as
   beans, maize, mustard, etc.

   Note: Annual and biennual herbs are monocarpic, so also some
         plants of longer duration, as the century plant.

Source : WordNet®

monocarpic
     adj : dying after bearing fruit only once