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aqua

[ak-wuh, ah-kwuh]
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noun, plural aq·uae [ak-wee, ah-kwee] /ˈæk wi, ˈɑ kwi/, aq·uas.
  1. Chiefly Pharmacology.
    1. water.
    2. a liquid.
    3. a solution, especially in water.
  2. a light greenish-blue color.
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adjective
  1. having the color aqua.
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Origin of aqua

1350–1400; Middle English < Latin: water

aqua-

  1. variant of aqui-.
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Origin of aqua-

probably orig. attributive use of aqua, or generalized from words in which it is etymologically the head noun of a phrase, as aquamarine, aquatint
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for aqua

aqua

noun plural aquae (ˈækwiː) or aquas
  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
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adjective
  1. short for aquamarine (def. 2)
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Word Origin

Latin: water
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

Word Origin and History for aqua

n.

"water," late 14c.; see aqua-. Used in late Middle English in combinations to mean "decoction, solution" (cf. aqua regia, a mix of concentrated acids, literally "royal water," so called for its power to dissolve gold and other "noble" metals). As the name of a light greenish-blue color, 1936.

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aqua-

word-forming element meaning "water," from Latin aqua "water; the sea; rain," cognate with Proto-Germanic *akhwo, source of Old English ea "river," Gothic ahua "river, waters," Old Norse Ægir, name of the sea-god, Old English ieg "island;" all from PIE *akwa- "water" (cf. Sanskrit ap "water," Hittite akwanzi "they drink," Lithuanian uppe "a river").

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Online Etymology Dictionary, © 2010 Douglas Harper