"thin water-color painting," 1855, from French aquarelle (18c.), from Italian acquerella "water-color," diminutive of acqua, from Latin aqua "water" (from PIE root *akwa- "water").
aquacade
aquaculture
aqualung
aquamarine
aquanaut
aquarelle
Aquarian
aquarium
Aquarius
aquatic
aquatint
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