aqueous

Meanings

1. 1
   adj

   consisting of, containing, or dissolved in water

   The chemist added the salt to an aqueous solution.

2. 2
   adj

   geology: formed, deposited, or altered by the action of water

   The cliff exposed alternating layers of lava and aqueous deposits.

From Medieval Latin aqueus, 'watery,' based on Latin aqua, 'water,' + English -ous. Scientific use broadened the adjective from things made of water to solutions and geological deposits produced by water.

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