prenucleus

adj

1. (not-comparable)Occurring before the development of a nucleus

noun

1. Non-subject elements that are placed at the beginning of a clause before the subject in an interrogative. (e.g. which one in Which one did you pick? ).

   “We have identified three kinds of peripheral constituents: ad-nuclei (i.e., pre-nuclei, in-nuclei and post-nuclei), associated nuclei and IU openers.”

2. A partially formed nucleus that is still developing.

   “In egg nucleus one prenucleus in which the chromosomes are developing . This prenucleus could have been formed as a result of fusion of nucleolus and sperm ;”