English
amyelinic
From a- + myelinic.
Proto-Indo-European *uds- ‘up, out’
Proto-Germanic *uz- ‘out-’
Proto-West Germanic *uʀ- ‘up, out, over’
English a-
Today it means
adj That lacks a myelin sheath
Language periods are conventional ranges, not dates for this word.
Etymograph / amyelinic