lacking color or any hue; completely transparent or without distinctive appearance or character.
Compound of 'color' (from Latin 'color') plus '-less' (Old English suffix meaning 'without'). The term became common in the 17th century as scientific descriptions required more precise color terminology.
Water is actually colorless, but appears blue in large quantities because blue light scatters differently—and diamonds are colorless but sparkle like rainbows because of how light bends inside them!
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