释义 |
par·aldehyde \(ˈ)par+\ noun Etymology: para- (I) + aldehyde : a colorless liquid of pleasant odor but disagreeable taste that is a cyclic trimer C6H12O3 of acetaldehyde formed by adding a drop or two of sulfuric acid to acetaldehyde, that regenerates acetaldehyde on heating with dilute acids, and that is used chiefly as a source of acetaldehyde and as a hypnotic; trimethyl-trioxane — compare metaldehyde |