prenucleus

1. not comparableOccurring before the development of a nucleus

plural prenuclei

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.

   2019, Anne Lacheret-Dujour, Sylvain Kahane, Paola Pietrandrea, Rhapsodie: A prosodic and syntactic treebank for spoken French

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 ;

   1959 ·, Doklady: biological sciences sections - Volumes 128-131, page 212