aMonocarpous(Bot) Bearing fruit but once, and dying after fructification, as beans, maize, mustard, etc.☞ Annual and biennual herbs are monocarpic, so also some plants of longer duration, as the century plant.
Century Dictionary and Cyclopedia
monocarpousProducing fruit but once in its life: said of annual plants.
monocarpousNoting a flower in which the gynœcium forms only a single ovary, whether simple or compound.
Chambers's Twentieth Century Dictionary
adjMonocarpousmon-ō-kärp′us bearing fruit only once, as wheat, and all annual plants