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Definitions from the Web

Lanthanoid

Description:

Lanthanoid refers to any of the series of fifteen metallic chemical elements from lanthanum (atomic number 57) to lutetium (atomic number 71) in the periodic table. These elements, also known as rare earth elements, are quite similar in their chemical properties.

Parts of Speech:

• Noun
• Adjective

Senses and Usages:

Noun:

1. A member of the lanthanoid series.

2. (chemistry) Any element belonging to the lanthanoid series.

Sample Sentences:

1. Cerium is a representative lanthanoid.

2. Europium is obtained as a byproduct of mining lanthanoids.

Adjective:

1. Pertaining to or characteristic of the lanthanoid series.

2. (chemistry) Describing compounds or ions derived from the lanthanoid series.

Sample Sentences:

1. Gadolinium oxide is a lanthanoid compound used in the manufacture of electronic devices.

2. Lanthanoid ions have unique optical properties.

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