Pumpless
adj
adj ·Rare ·Advanced level
Definitions
Adjective
- 1 Without a pump. not-comparable
"Between Paris and Lyons the substation rectifiers were multi-anode units with vacuum pumps, either water- or air-cooled (the pumpless type having come later into general use on the Continent than in Britain and being first used for main-line traction in France in 1953)."
Example
More examples"Between Paris and Lyons the substation rectifiers were multi-anode units with vacuum pumps, either water- or air-cooled (the pumpless type having come later into general use on the Continent than in Britain and being first used for main-line traction in France in 1953)."
Etymology
From pump + -less.
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.