from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The coming together and fusing of cell nuclei, as in fertilization.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The fusion of two nuclei within a cell, especially as the second stage of syngamy.
from The Century Dictionary and Cyclopedia
- n. In embryology, the union of two nuclei, as during the fertilization of the egg by the spermatozoön.
From karyo- + -gamy (Wiktionary)