1875 E. R. Lankester in 15 165 (heading) Epibolic invaginate Planulæ.
1897 T. J. Parker & W. A. Haswell I. v. 257 The process by which the germinal layers have become formed is..a process of epibolic gastrulation.
1966 (rev. ed.) VI. 79 In some animals, such as certain coelenterates, no pronounced epibolic or embolic movements of cells seem to occur during gastrulation.