Term: forebrain ventral side
Name: forebrain
Synonyms: prosencephalon
Definition: The most anterior region the brain including both the telencephalon and diencephalon.
Ontology: Anatomy Ontology [ZFA:0000109]

Name: ventral side
Synonyms: ventral
Definition: An anatomical region that is the entire part of an anatomical structure ventral to a horizontal plane and bounded on one side by the same horizontal plane.
Ontology: Spatial Ontology [BSPO:0000068]