English
intertrain
From inter- + train.
Proto-Indo-European *h₁én ‘in’
Proto-Indo-European *h₁entér ‘between’
Proto-Italic *n̥ter ‘between’
Latin inter ‘between’
English inter-
Latin trahō ‘to pull, to draw’
…
Vulgar Latin *traginō
Old French trainer ‘to pull out, to draw’
Old French train ‘a delay, a drawing out’
Middle English trayne ‘train’
English train
Today it means
adj Between pulsetrains.
Language periods are conventional ranges, not dates for this word.
Etymograph / intertrain