Semi-Metal Definition

Germanium, a semi-metal, has metallic luster but is a semiconductor rather than a conductor.
Germanium, a semi-metal, has metallic luster but is a semiconductor rather than a conductor. ALFRED PASIEKA/SCIENCE PHOTO LIBRARY / Getty Images

Semi-Metal Definition: A semi-metal is an element that contains a partially filled p orbital.

The semi-metal group consists of hydrogen, carbon, nitrogen, oxygen, phosphorus, sulfur, and selenium.

Also Known As: metalloid

Alternate Spellings: semimetal