from The American Heritage® Dictionary of the English Language, 4th Edition
- 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.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The expansion of one cell sheet over other cells, as takes place during gastrulation or secondary intention wound healing.
from the GNU version of the Collaborative International Dictionary of English
- n. Epibolic invagination. See under invagination.
from The Century Dictionary and Cyclopedia
- n. In embryology, that kind of gastrulation in which the inclusion of the hypoblastic blastomeres within the epiblastic blastomeres appears to result from the growth of the latter over the former, instead of being the consequence of a proper emboly, or true process of invagination of the hypoblast within the epiblast. See emboly. Also epibole, epibolism.
Greek epibolē, a throwing or laying on, from epiballein, to throw on : epi-, epi- + ballein, to throw; see gwelə- in Indo-European roots.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Ancient Greek ἐπιβολή (epibolé, "addition") (Wiktionary)