An
incipient ovule of soft cellular tissue.
A body, usually spheroidal,
in a cell or a protozoan, distinguished from the surrounding
protoplasm by a difference in refrangibility and in behavior towards
chemical reagents. It is more or less protoplasmic, and consists of a
clear fluid (achromatin) through which extends a network of fibers
(chromatin) in which may be suspended a second rounded body, the
nucleolus (see Nucleoplasm). See Cell division, under
Division.
The tip, or earliest part, of a univalve or bivalve shell.
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