Noun
An abnormal prolongation of the axis of inflorescence.
The shaft, or main part, of a bone, which is first ossified.
Source: Webster's dictionaryThe diaphysis and both epiphyses of a long bone are separated by a growing zone of cartilage (the epiphyseal plate ). Source: Internet
When the child reaches skeletal maturity (18 to 25 years of age), all of the cartilage is replaced by bone, fusing the diaphysis and both epiphyses together (epiphyseal closure). Source: Internet