Of or relating to organisms or structures that do not readily absorb or attract dyes and colors, lacking affinity for stains.
From Greek 'achromatos' (colorless) + 'philous' (loving or attracted to). This describes the property of materials or cells that resist or fail to bind with dyes.
This word is the opposite of what you'd expect—something called 'color-loving' that actually rejects color—it's one of those scientific terms that makes more sense if you know Greek but seems backwards in English!
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