Term: preoptic area brain nucleus
Name: preoptic area
Synonyms: area praeoptica, area preoptica, preoptic region
Definition: Area of the forebrain anterior to the posterior tuberculum and the hypothalamus and ventral to the ventral thalamus. See Figure 7, p. 34 in Atlas of Early Zebrafish Brain Development.
Ontology: Anatomy Ontology [ZFA:0000470]

Name: brain nucleus
Synonyms: brain nuclei
Definition: Portion of tissue that are compact accumulations of neurons having roughly similar connections and functions.
Ontology: Anatomy Ontology [ZFA:0005575]