Alloy
AL-oy
/ˈælɔɪ/
(noun) A metal made by combining two or more metallic elements, especially to give greater strength or resistance to corrosion. (verb) To mix metals to form an alloy.
Alloys are typically designed to improve specific properties of pure metals, like hardness, strength, or corrosion resistance.
The story behind the word. The word 'alloy' comes from the Old French 'aloi,' meaning 'mixture,' which itself derived from the Latin verb 'alligare,' meaning 'to bind to.' This Latin root is formed from 'ad-' (to) and 'ligare' (to bind). So, an alloy literally refers to metals that are 'bound together' to form a new material with combined properties. The term has been used in English since the 14th century.
Word relationships
- mixture: More general term; an alloy is a specific type of mixture involving metals.
- blend: Similar to mixture, but 'alloy' implies a more intentional and often solid metallic combination.
- pure metal: A single metallic element, not combined with others.
Commonly confused with
- Compound: A compound involves chemical bonds between elements; an alloy is typically a metallic mixture or solid solution, though some intermetallic compounds exist within alloys.
Word family
- alloying (noun): The process of making an alloy.
Collocations
- steel alloy
- aluminum alloy
- precious alloy
- superalloy
Example sentences
- "Steel is an alloy of iron and carbon, known for its exceptional strength." Referring to a specific metal mixture.
- "Bronze, an alloy of copper and tin, was crucial for ancient toolmaking." Discussing material properties.
- "Metallurgists often alloy different metals to achieve specific desired characteristics." As a verb, describing the process.
Memory hook
Think of 'ALLOY' as 'ALL' metals 'LOY-ally' (loyally) bound together to make a stronger team. ALLOY: ALL metals loyally bound
When not to use
Do not use 'alloy' for non-metallic mixtures or for simple mixtures of metals that don't form a solid solution or intermetallic compound.
Fun facts
- The Bronze Age was named for the widespread use of bronze, an alloy of copper and tin, which was harder and more durable than pure copper.
- Some alloys, like shape-memory alloys, can return to their original shape after being deformed, a property used in medical stents and eyewear.
Related words
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