trioxide
Definition
Noun: A chemical compound that contains exactly three oxygen atoms in each of its molecules. It is a specific type of oxide.
Usage
The word "trioxide" is used primarily in chemistry to name and describe compounds with the formula XO₃, where X represents another element or group of atoms. It is a technical term.
Examples
- Sulfur trioxide (SO₃) is an important industrial chemical.
- Arsenic trioxide (As₂O₃) has been used in medicine and as a poison.
- The formation of dinitrogen trioxide (N₂O₃) is studied in atmospheric chemistry.
Advanced Usage
- Naming Conventions: In systematic chemical nomenclature, the prefix "tri-" indicates three oxygen atoms. The name of the other element is modified (e.g., "sulfur" becomes "sulfur" in "sulfur trioxide").
- Properties: Trioxides can be acidic, basic, or amphoteric depending on the element they are combined with. For example, sulfur trioxide is an acidic oxide, while aluminum oxide (Al₂O₃), though often called alumina, is an amphoteric oxide.
Variants and Related Words
- Oxide (n): A binary compound of oxygen with another element or group.
- Dioxide (n): An oxide containing two atoms of oxygen.
- Monoxide (n): An oxide containing one atom of oxygen.
- Tetroxide (n): An oxide containing four atoms of oxygen.
Synonyms
- There are no direct synonyms for this precise chemical term. Descriptive phrases like "an oxide with three oxygen atoms" can convey the meaning.
Related Phrases
- Trioxide compound: A more explicit phrase emphasizing it is a chemical substance.
- The lab synthesized a new sulfur trioxide compound.
Notes
This word is almost exclusively used in scientific and technical contexts. It is not typically used in everyday conversation.
Noun
-
an oxide containing three atoms of oxygen in the molecule
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