The Collaborative International Dictionary of English v.0.48:

Oophyte \O"o*phyte\, n. [Gr. w,'o`n an egg + fyto`n a plant.]
   (Bot.)
   Any plant of a proposed class or grand division (collectively
   termed oophytes or Oophyta), which have their sexual
   reproduction accomplished by motile antherozoids acting on
   oospheres, either while included in their oogonia or after
   exclusion.
   [1913 Webster]

   Note: This class was at first called Oosporeae, and is made
         to include all algae and fungi which have this kind of
         reproduction, however they may differ in all other
         respects, the contrasted classes of Thallophytes being
         Protophytes, Zygophytes, and Carpophytes. The whole
         system has its earnest advocates, but is rejected by
         many botanists. See Carpophyte.
         [1913 Webster]