English
transspinally
From trans- + spinally or transspinal + -ly.
Proto-Indo-European *terh₂- ‘to cross over, pass through, overcome’
…
Proto-Indo-European *tr̥h₂ónts
Proto-Indo-European *tr̥h₂n̥ts
Proto-Italic *trāns ‘across, beyond’
Proto-Italic *trāns-
English trans-
Today it means
adv In a transspinal direction
Language periods are conventional ranges, not dates for this word.
Etymograph / transspinally