| Webster's Online Dictionary |
| Expressions | Domain | Definition | |
| Electric sponge | Mining | An electric centrifugal pump consisting of a small vertical centrifugal pump so designed that it will draw water if it is only 2 to 3 in (5.1 to 7.6 cm) deep. It is placed in the water at the bottom of a shaft and lifts the water up to a horizontal centrifugal pump placed about 50 ft (15.2 m) above. (references) | |
Source: compiled by the editor from various references; see credits. | Top | ||
