Aqua
来自Big Physics
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1930s: abbreviation of aquamarine.
wiktionary
From Middle English aqua(“water”), borrowed from Latin aqua. Perhaps also a learned borrowing directly from Latin. Doublet of ea, Eau, eau, and yeo.
etymonline
aqua (n.)
"water," late 14c., from Latin aqua "water; the sea; rain," from PIE root *akwa- "water." Used in late Middle English in combinations from old chemistry and alchemy to mean "decoction, solution" (as in 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.
