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.
leaf noun [ C ] (PLANT) B1 one of the flat, usually green parts of a plant that are joined at one end to the stem or branch: a palm leaf. autumn leaves. He was raking up leaves in his garden. be in leaf/come into leaf. âº When a plant is in leaf or when it comes into leaf, it has or gets leaves on it: The trees are in leaf early this year.