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aqua

1 American  
[ak-wuh, ah-kwuh] / ˈæk wə, ˈɑ kwə /

noun

plural

aquae, aquas
  1. Chiefly Pharmacology.

    1. water.

    2. a liquid.

    3. a solution, especially in water.

  2. a light greenish-blue color.


adjective

  1. having the color aqua.

aqua- 2 American  
  1. variant of aqui-.


aqua British  
/ ˈækwə /

noun

  1. water: used in compound names of certain liquid substances (as in aqua regia ) or solutions of substances in water (as in aqua ammoniae ), esp in the names of pharmacological solutions

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

adjective

  1. short for aquamarine

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Usage

What does aqua- mean? Aqua- is a combining form used like a prefix meaning “water.” It is occasionally used in a variety of scientific and technical terms. Aquia comes from Latin aqua, meaning “water.” The Greek translation is ​​​​hýdōr, meaning “water,” which is the source of such combining forms as hydro-. What are variants of aqua-?In some terms, aqua- becomes aqui-, as in aquifer, from French aquifère. Want to know more? Read our Words That Use article on aqui-.

Etymology

Origin of aqua1

1350–1400; Middle English < Latin: water

Origin of aqua-2

Probably originally attributive use of aqua, or generalized from words in which it is etymologically the head noun of a phrase, as aquamarine, aquatint

Explanation

Aqua is a greenish-blue color, often thought of as the shade of water. When you buy a new blender, you might decide that the aqua one will brighten up your kitchen. Aqua is pretty close to the color known as cyan, almost exactly halfway between green and blue on the color spectrum. You can buy aqua clothing or aqua paint if you love the color and want your dining room to feel cool and colorful. The word aqua is sometimes also used to mean "water," and in fact the Latin root means "water, the sea, or rain."

Keep Reading on Vocabulary.com

Vocabulary lists containing aqua

Example Sentences

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

Recently released in the intimate 30mm watchface, the Aqua Terra matches the functionality of a sports watch with the sophistication of a dress watch.

From Los Angeles Times • Nov. 17, 2025

Waterworld said the incident happened in the Lagoon area of its Aqua Park.

From BBC • Aug. 4, 2025

Aqua Park is set to move to Cosmeston Lake in Penarth, Vale of Glamorgan, after it told the council issues over water quality had left it "unable to operate" following heavy rain.

From BBC • Mar. 13, 2025

There are two locations: one in the same building as the Live Aqua Urban Resort and the other in Polanco, both offering excellent experiences.

From Salon • Feb. 22, 2025

“My father and I herded sheep on the Aqua Negra ranch,” he said.

From "Bless Me, Ultima" by Rudolfo Anaya