What does detrain mean?
To detrain is to leave a train — to step off it after a journey. The verb applies both to passengers getting off and, in military usage, to the unloading of troops or equipment from a train, as when an entire regiment detrains at a railhead before marching onward. It is formed from the prefix 'de-' (indicating removal) combined with 'train', and pairs neatly with its opposite, 'entrain', meaning to board a train. Though understood in American English, detrain is chiefly British and has a slightly formal, old-fashioned flavor today; ordinary speakers are far more likely to say they got off the train. It remains current, however, in railway operations and military history writing, where precision about how soldiers arrived at the front matters. For anyone reading accounts of twentieth-century wars or vintage timetables, recognizing detrain makes such prose instantly clearer.
To leave or alight from a train.
"We detrained at York and walked the rest of the way."
Intransitive in this sense.
To remove or unload (troops or goods) from a train.
"The artillery was detrained overnight and moved to the assembly area."
Transitive; typical of military dispatches.
Soldiers once 'entrained' and 'detrained' their way through two world wars — a tidy pair of railway verbs most people have never heard of.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of detrain
Detrain was formed in English during the nineteenth century, at the height of railway expansion, by adding the prefix 'de-', meaning removal or reversal, to 'train'. Its counterpart 'entrain' arose the same way, giving English a matched pair of railway verbs. The word 'train' itself ultimately derives from Old French 'trahiner', from Latin 'trahere' ('to pull, drag'), the same root that gives us 'tract' words like 'extract' and 'tractor'. Detrain never entered everyday conversation as thoroughly as 'get off', but it established itself firmly in British military and railway terminology.
Related word forms
How detrain is actually used
Chiefly British and somewhat dated in everyday speech, though it survives in military and railway contexts. The transitive use ('the troops were detrained') is more characteristic of official military writing than of casual conversation.
Easily confused with detrain
'Entrain' means to board or put aboard a train (or, in science, to draw along with it), while 'detrain' means the opposite action of leaving a train.