The Collaborative International Dictionary of English v.0.48:

Gymnocyte \Gym"no*cyte\ (j[i^]m"n[-o]*s[imac]t), n. [Gr. gymno`s
   naked + ky`tos a hollow vessel.] (Biol.)
   A cytode without a proper cell wall, but with a nucleus.
   --Haeckel.
   [1913 Webster]