Definitions for "Nucellus"
the central tissue of an ovule, within which the megaspore mother cell is formed.
nucella, a small nut)  Tissue composing the chief part of the young ovule in which the embryo sac develops; megasporangium.
The central portion of the ovule, containing the embryo sac, and surrounded by integuments
Keywords:  nucleus, see
See Nucleus, 3 (a).