Hypertext Webster Gateway: "blastula"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Blastula \Blas"tu*la\, n. [NL., dim. of Gr. blasto`s a sprout.]
(Biol.)
That stage in the development of the ovum in which the outer
cells of the morula become more defined and form the
blastoderm.
From WordNet (r) 1.7 (wn)
blastula
n : early stage of an embryo produced by cleavage of an ovum; a
liquid-filled sphere whose wall is composed of a single
layer of cells; during this stage (about eight days after
fertilization) implantation in the wall of the uterus
occurs [syn: {blastodermic vesicle}]
Additional Hypertext Webster Gateway Lookup
Gateway by dict@stokkie.net
stock only wrote the gateway and does not have any control over the contents;
see the Webster Gateway FAQ,
and also the Back-end/database links and credits.