Skip to definition.
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

Derived forms: pronuclei

Type of: cell nucleus, karyon, nucleus

Encyclopedia: Pronucleus