Definition

Noun: 1. Any element of the lanthanide series: A lanthanon is any of the 15 metallic chemical elements with atomic numbers 57 through 71 on the periodic table. These elements are also commonly called lanthanides. They are known for their similar properties, such as being silvery-white, tarnishing in air, and having high magnetic susceptibility.

Usage Examples

• Noun:
  • Lanthanum, the first lanthanon, is used in camera lenses.
  • The chemist studied the unique electronic structure of each lanthanon.
  • These minerals contain a mixture of several lanthanons.

Advanced Usage

• Scientific Context: The term "lanthanon" is used primarily in technical and scientific writing, particularly in chemistry, geology, and materials science, to refer collectively or individually to these elements.
  • The separation of individual lanthanons from their ore is a complex process.

Variants and Related Words

• Lanthanide (n): This is the more common and preferred synonym for "lanthanon" in modern scientific literature.
  • The lanthanide series includes elements from lanthanum to lutetium.
• Rare-earth element (n): This is a broader category that includes the lanthanons (lanthanides) plus scandium and yttrium.
  • Neodymium, a lanthanon, is a rare-earth element used in powerful magnets.

Synonyms

• Lanthanide: The direct and most frequently used synonym.
• Rare-earth metal (when referring to metallic form): This is a less precise synonym as it includes elements outside the lanthanide series.

Notes on Meaning

• The term "lanthanon" is considered somewhat dated but is still understood in scientific contexts. "Lanthanide" is the standard term in contemporary use.
• All lanthanons are metals and share very similar chemical properties, making them difficult to separate from one another.

Noun

1. any element of the lanthanide series (atomic numbers 57 through 71)