4. Hypothalamus â (âhypoâ = below), the most ventral part of the. diencephalon; it is the most signiï¬cant component of the diencephalon. from a clinical standpoint because lesions result in abnormalities in. endocrine, limbic and/or autonomic function.
The plural of leaf is leaves. The plural of leaf is leaves. 1  In most plant species, leaves are broad and flat.  The longest leaves are those of the Raffia palm. They can grow to be up to 25 m long and 3 m wide.
Definition of leaf for English Language Learners. : 1  one of the flat and typically green parts of a plant that grow from a stem or twig. : 2  a sheet of paper in a book. : 3  a part that can be added to or removed from a table to change the size of its top surface.