e·pib·o·ly ( -pb  -l )n. The growth of a rapidly dividing group of cells around a more slowly dividing group of cells, as in the formation of a gastrula. [Greek epibol , a throwing or laying on, from epiballein, to throw on : epi-, epi- + ballein, to throw; see gwel- in Indo-European roots.]ep  i·bolic ( p-b lk) adj. |
epiboly [ɪˈpɪbəlɪ]
n pl -lies
(Life Sciences & Allied Applications / Zoology) Embryol a process that occurs during gastrulation in vertebrates, in which cells on one side of the blastula grow over and surround the remaining cells and yolk and eventually form the ectoderm
[from Greek epibolē a laying on, from epiballein to throw on, from epi- + ballein to throw]
epibolic [ˌɛpɪˈbɒlɪk] adj
epiboly
the growth of part of an organism in such a way that it overlays or surrounds another. — epibolic, adj.
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