platinoid

A scientist examines a platinoid sample under bright laboratory lights.

Definition

1. Noun:
   • An alloy resembling platinum: "platinoid" refers to any of various alloys that have a composition similar to platinum or contain platinum, often used in electrical contacts and scientific instruments due to their resistance to corrosion and high melting point.

Usage Examples

• Noun:
  • The laboratory replaced the old wires with platinoid for better conductivity. (The alloy was used because of its durability and resistance to oxidation.)
  • Platinoid is commonly employed in thermocouples and resistance thermometers. (The alloy is used in temperature-measuring devices.)

Advanced Usage

• "platinoid metals": a term sometimes used to describe the platinum group metals (ruthenium, rhodium, palladium, osmium, iridium, and platinum) collectively.
  • The platinoid metals are valued for their catalytic properties. (The group of metals is important in chemical reactions.)

Variants and Related Words

• Platinum (n): a precious, silvery-white metal, the base element for platinoid alloys.
  • Platinum is more expensive than gold. (The pure metal is rare and valuable.)

Synonyms

• Alloy: a mixture of metals.
• Platinum-like: resembling platinum in properties.

Related Idioms