资料来源 : pyDict

多胎

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Polyembryony \Pol`y*em"bry*o*ny\, n. [See {Poly-}, and
   {Embryo}.] (Bot.)
   The production of two or more embryos in one seed, due either
   to the existence and fertilization of more than one embryonic
   sac or to the origination of embryos outside of the embryonic
   sac.