Aqueous – Definition & Meaning

Aqueous is a term that is commonly used in the field of chemistry and biology. It is a word that describes something that is dissolved in water, or that is related to water. In this article, we will explore the definition and meaning of aqueous, as well as its origins, associations, synonyms, and antonyms.


The word aqueous is an adjective that describes something that is related to or dissolved in water. It can be used to describe a solution, a compound, or a reaction that takes place in water. For example, an aqueous solution of sodium chloride is a solution in which salt is dissolved in water.


The word aqueous comes from the Latin word aqua, which means water. It was first used in the English language in the early 17th century.

Meaning in different dictionaries

According to the Oxford English Dictionary, aqueous is defined as “of or containing water, typically as a solvent or medium.” Merriam-Webster defines it as “of, relating to, or resembling water.”


Aqueous is commonly associated with chemistry and biology, as it is often used to describe solutions, compounds, and reactions that take place in water. It is also associated with the properties of water, such as its ability to dissolve certain substances.


Some synonyms of aqueous include watery, liquid, fluid, and dissolved.


Some antonyms of aqueous include dry, solid, and gaseous.

The same root words

Some words that share the same root as aqueous include aqueduct, aquarium, and aquifer. These words all contain the Latin root aqua, which means water.

Example Sentences

  • The chemist prepared an aqueous solution of sodium hydroxide.
  • The biologist studied the aqueous environment of a pond.
  • The artist used an aqueous medium to create a watercolor painting.
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