non-traction en · ADJ
Etymology
From non- + traction.
Meanings
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(not-comparable) Not for traction (motive power).
Each four-car set is made up of: a 35¾-ton battery driving trailer open second, which also carries on its underframe the batteries, and battery-charging and compressor rectifiers and a compressor to provide energy for a variety of non-traction purposes; [...].
1959 June, “The opening of the Colchester-Clacton-Walton electrification”, in Trains Illustrated, page 307: