On stream

adv

Definitions

Adverb
  1. 1
    In or into operation or production. not-comparable

    "HSTs continued to provide sterling service during these years, so much so that when Virgin and Midland Mainline brought their new wave of high-speed diesel electric multiple units [...] on stream, many preferred the ride and comfort of the vanquished to the ride and comfort of the vanquisher."

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