slag

/slæg/

Thân thiện

The blacksmith removes the slag from the molten iron.

Definition

1. Noun:

   • The waste material or scum that forms on the surface of molten metal during smelting or refining: "slag" refers specifically to the non-metallic byproduct that separates from metals when they are melted. It consists mostly of silicates and other impurities.
   • Similar waste material from other industrial processes, such as coal combustion: By extension, "slag" can also describe the glass-like waste left over from certain industrial operations.

2. Verb:

   • To convert or be converted into slag: This describes the process where material becomes waste slag, often through intense heat in a furnace or similar environment.

Examples of Usage

• Noun:

  • The furnace produced tons of slag that had to be disposed of.
  • The old industrial site was covered in piles of black slag.

• Verb:

  • The intense heat caused the impurities to slag off.
  • The process is designed to slag the waste materials efficiently.

Advanced Usage

• "to slag off" (phrasal verb, chiefly British, informal): to criticize or insult someone harshly.
  • The critics slagged off the new film mercilessly.
  • He's always slagging off his colleagues.

Variants and Related Words

• Slaggy (adj): having the characteristics of or resembling slag.
  • The ground was hard and slaggy from the old foundry waste.

Synonyms

• Noun: Scoria, dross, cinder, clinker, ash.
• Verb (for the industrial process): Vitrify, fuse.

Related Phrasal Verbs

• Slag off: (informal) To criticize or denigrate someone verbally.
  • She didn't mean to slag off his work; she was just giving constructive feedback.

Related Idioms

• No specific idioms center solely on the word "slag." The informal phrasal verb "slag off" is the most common idiomatic usage.

Học thuật

Noun

1. the scum formed by oxidation at the surface of molten metals

Verb

1. convert into slag

Từ đồng nghĩa

• scoria
• dross