Get the FREE one-click dictionary software for Windows
or the iPhone/iPad and Android apps
Noun: pronucleus (pronuclei)  ,prow'n(y)oo-klee-us
  1. The nucleus of the ovum or sperm after fertilization but before they fuse to form the nucleus of the zygote
    "The male and female pronuclei approach each other before fusion"

Derived forms: pronuclei

Type of: cell nucleus, karyon, nucleus

Encyclopedia: Pronucleus