单质

Traditional form:

單質

Pinyin (reading):

dānzhì

Definitions:

• simple substance (consisting purely of one element, such as diamond)

Characters:

• 单 - single, individual, only; lone
• 质 - essence, nature; material, substance

Traditional characters:

• 單 - single, individual, only; lone
• 質 - essence, nature; material, substance