The Collaborative International Dictionary of English v.0.48:

Sporozoid \Spo`ro*zo"id\ (-[i^]d), n. [Spore + Gr. zo^,on an
   animal.] (Bot.)
   Same as Zoospore.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Zoospore \Zo"o*spore\, n. [Zoo- + spore.]
   [1913 Webster]
   1. (Bot.) A spore provided with one or more slender cilia, by
      the vibration of which it swims in the water. Zoospores
      are produced by many green, and by some olive-brown,
      algae. In certain species they are divided into the larger
      macrozoospores and the smaller microzoospores. Called also
      sporozoid, and swarmspore.
      [1913 Webster]

   2. (Zool.) See Swarmspore.
      [1913 Webster]