acid sludge
noun
: gummy material that separates from a petroleum oil on treatment with sulfuric acid
Word History
First Known Use
1885, in the meaning defined above
- gentlemen farmers
- gentlemen friends
- gentlemen's agreement
- gentlemen-and-ladies
- gentlemen-at-arms
- gentlemen-commoners
- gentlemen-pensioners
- gentlemen-rankers
- gentlemen-ushers
- gentleness
- gentlenesses
- gentlepeople
- gentleperson
- gentlepersons
- gentler
- gentler sex
- gentles
- gentlest
- gentlewoman
- gentlewomanly
- gentlewomen
- gentlier
- gentliest
- gentling
- gently