In a manner that shows movement or orientation away from light or the sun.
From apheliotropic + -ally (adverbial suffix). This adverb form allows scientists to describe behaviors and movements that avoid sunlight in more fluid, descriptive sentences.
When biologists write that a nocturnal beetle moves 'apheliotropically toward darkness,' they're using a single word to convey millions of years of evolutionary fine-tuning—it's scientific poetry.
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