uniparous

from WordNet (r) 3.0 (2006)

uniparous
    adj 1: producing only one offspring at a time [ant:
           {multiparous}]

from The Collaborative International Dictionary of English v.0.48

Uniparous \U*nip"a*rous\, a. [Uni- + L. parere to bring forth.]
   1. (Zool.) Producing but one egg or young at a time.
      [1913 Webster]

   2. (Bot.) Producing but one axis of inflorescence; -- said of
      the scorpioid cyme.
      [1913 Webster]