nounWord forms: plural -ses (-ˌsiːz)1. the end of a long bone, initially separated from the shaft (diaphysis) by a section of cartilage that eventually ossifies so that the two portions fuse together
2. Also called: epiphysis cerebri (ˈsɛrɪˌbraɪ). the technical name for pineal gland
Word origin
C17: via New Latin from Greek: a growth upon, from
epi- +
phusis growth, from
phuein to bring forth, produce