steamless

English

Etymology

From steam +‎ -less.

Adjective

steamless (not comparable)

1. Without steam.

   steamless pyrolysis of ethane to ethylene

   • 1962 October, “Motive Power Miscellany”, in Modern Railways, page 284, photo caption:

     Steamless scene at Oban on August 8, with Birmingham R.C.W. Type 2 diesels Nos. D5361 on the 4.55 p.m. to Ballachulish, D5348 on the 5.30 p.m. to Glasgow and Edinburgh and D5362 on the 6 p.m. to Euston.