DROSS

Pronunciation (US): (GB):

Meaning:

Worthless or dangerous material that should be removed

Example:

there were impurities in the water

Synonyms:

dross; impurity

Classified under:

Nouns denoting substances

Hypernyms ("dross" is a kind of...):

waste; waste material; waste matter; waste product (any materials unused and rejected as worthless or unwanted)

Meaning:

The scum formed by oxidation at the surface of molten metals

Synonyms:

dross; scoria; slag

Classified under:

Nouns denoting substances

Hypernyms ("dross" is a kind of...):

scum (a film of impurities or vegetation that can form on the surface of a liquid)

Hyponyms (each of the following is a kind of "dross"):

basic slag (slag produced in making steel; low in silica but having large amounts of calcium phosphate; useful as fertilizer)