Meaning of pumpless | Babel Free

Definitions

Without a pump.

not-comparable

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).”

CEFR level