Oosphere

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Oosphere \O"o*sphere\ ([=o]"[-o]*sf[=e]r), n. [Gr. w,'o`n an egg
     + E. sphere.]
     [1913 Webster]
     1. (Bot.) An unfertilized, rounded mass of protoplasm,
        produced in an oogonium.
        [1913 Webster]


  
     Note: After being fertilized by the access of antherozoids it
           becomes covered with a cell wall and develops into an
           oospore, which may grow into a new plant like the
           parent.
           [1913 Webster]
  
     2. (Bot.) An analogous mass of protoplasm in the ovule of a
        flowering plant; an embryonic vesicle. --Goodale.
        [1913 Webster]

From WordNet (r) 2.0 [wn]:

  oosphere
       n : used especially of lower plants