Definition

A type of waste material that is produced during the process of smelting metal, often consisting of a glassy substance left over after the metal has been extracted.

Example

The workers removed the slag from the furnace after the metal was poured out.

Conversation

Did you see all that slag left over from the metal work yesterday?

Yeah, I was surprised by how much there was after the smelting.

I know, right? It looked like a real mess!

For sure, but it’s interesting to see the process in action.

Synonyms & Antonyms

Definition

To change something into a waste material that is left after metal has been melted and separated from its impurities.

Example

The factory will slag the leftover metal to recycle it.

Tense Forms

Conversation

Did you see how they slag the metal during the process yesterday?

Yeah, it was interesting to watch how it changed.

I didn't realize they had to slag it to remove impurities.

Root Explanation

The word 'slag' originates from Old Norse 'sleggr', meaning a clumsy or heavy person, and is related to the act of sloughing off waste material from metal smelting. It refers to the waste material that is separated from metals during the smelting process.

Memory Tip

Think of the Old Norse word for a heavy or clumsy person, which helps you remember that 'slag' refers to the waste material that is left behind after metal is processed.

Visually Confused Words