self-powered en · ADJ
Etymology
From self- + powered.
Meanings
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(not-comparable) Powered by itself without requiring an external power source.
"It sets out a clear focus on decarbonising the network through a rolling programme of electrification and investment in low-carbon, self-powered rolling stock, both of which the rail industry stands to deliver."
2020 August 12, Philip Haigh, “Network News: Scotland reveals 2035 decarbonisation strategy”, in Rail, page 12: