epiboly

【医】 外包

形容词:epibolic 

e.pib.o.ly

n.Embryology （名词）【胚胎学】
The growth of a rapidly dividing group of cells around a more slowly dividing group of cells, as in the formation of a gastrula.
外包：在胚胎的形成中，一部分分裂快的细胞的生长包围另一部分生长慢的细胞

来源：
Greek epibolô [a throwing or laying on]
希腊语 epibolô [扩散或增长]
from epiballein [to throw on]
源自 epiballein [猛攻]
epi- [epi-]
epi- [在…周围]
ballein [to throw] * see g wel…-
ballein [扔] *参见 g wel…-

【引伸】
ep.ibol.ic