a nonmetallic chemical element with the symbol Se and atomic number 34, found in several allotropic forms, including a gray crystalline form and a red amorphous form. It is used in rectifiers, as a semiconductor, and in xerography., a gray crystalline nonmetallic element with semiconducting properties; used in transistors; occurs in sphalerite and in many minerals

Formal and Informal Expressions of selenium

In different contexts, you can replace 'selenium' with suitable alternatives. In a more formal setting, 'chemical element, nonmetallic element' is apt.

selenium: Explore its Definition & Usage

selenium Definition

1a nonmetallic chemical element with the symbol Se and atomic number 34, found in several allotropic forms, including a gray crystalline form and a red amorphous form. It is used in rectifiers, as a semiconductor, and in xerography.
2a gray crystalline nonmetallic element with semiconducting properties; used in transistors; occurs in sphalerite and in many minerals

Using selenium: Examples

Take a moment to familiarize yourself with how "selenium" can be used in various situations through the following examples!

Example
Selenium is an essential trace element for humans.
Example
Selenium is used in the electronics industry.
Example
Selenium is a semiconductor material.

selenium Synonyms and Antonyms

Synonyms for selenium

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Summary: selenium in Brief

Selenium [sɪˈliːniəm] is a nonmetallic chemical element with atomic number 34. It has semiconducting properties and is used in electronics and xerography. Selenium is also an essential trace element for humans.