chemical symbol

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noun

A one- or two-letter abbreviation used to represent a specific chemical element, such as H for hydrogen or Fe for iron.

Example Sentences

Examples are provided to illustrate usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

“Soon everyone will know H2SO4,” he added—the chemical symbol for the colorless, corrosive liquid.

From The Wall Street Journal ● Apr. 16, 2026

Silicon, with chemical symbol Si, is a particularly interesting material to study thanks to its widespread use in the semiconductor industry.

From Science Daily ● Dec. 1, 2023

Thesaurus

Possible Synonyms

element abbreviation
atomic symbol
element symbol
periodic table notation

Possible Antonyms

full name of element
chemical formula
molecular representation
element name