Slag: meaning, definitions and examples
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slag
[ slæɡ ]
material waste
Slag is a byproduct of the metal smelting process, forming as waste material that separates from the molten metal. It is primarily composed of impurities that have been removed from ores during the extraction of metals, and it often consists of silicates and other compounds. Slag can be repurposed for various applications, such as in construction, where it can be used to manufacture cement or road base materials. The composition and characteristics of slag can vary depending on the metal being extracted and the specific smelting process used.
Synonyms
Examples of usage
- The factory produced a large amount of slag during the smelting process.
- They used slag as a base material for the new road.
- The researchers studied the properties of iron slag for recycling.
- Many builders prefer using slag for its durability.
to criticize
To slag someone is often used in British informal language and means to criticize or speak disparagingly about someone, particularly in a humorous or mocking manner. This term may imply a level of disdain or scorn towards the individual. Slagging can be directed at actions, opinions, or personal traits, and it may be used among peers in a teasing context. However, it can also carry a negative connotation when it is intended to belittle someone intentionally.
Synonyms
belittle, criticize, disparage.
Examples of usage
- He always slags off his competitors to gain an advantage.
- They spent the evening slagging each other in good fun.
- Be careful not to slag too harshly; it might hurt someone's feelings.
- The comedian slagged off various celebrities in his stand-up routine.
Etymology
The word 'slag' originates from Middle Dutch 'slag', which means 'to strike' or 'to hit'. The concept of slag related to metal processing can be traced back to ancient metallurgy, where it was recognized as the waste material produced during the extraction of metals from ores. The term evolved over time, with the meaning expanding to include not only the physical byproduct of metalworking but also its cultural connotations in informal speech. In the 19th century, the use of 'slag' in the context of informal criticism emerged, likely stemming from the derogatory sense associated with leaving something behind or discarding it. Today, the word spans various contexts, from industrial applications to colloquial expressions in everyday conversation.