Epiphysis

n.

1.

(Anat.) The end, or other superficial part, of a bone, which ossifies separately from the central portion, or diaphysis.

Noun	1.	epiphysis - the end of a long bone; initially separated from the main bone by a layer of cartilage that eventually ossifies so the parts become fused
	2.	epiphysis - a small endocrine gland in the brain; situated beneath the back part of the corpus callosum; secretes melatonin Synonyms: epiphysis cerebri, pineal body, pineal gland

long bone, os longum