A strong love or preference for sunlight and sunny conditions.
From Greek helios (sun) + -philia (love of, from philos meaning 'loving'). The -philia suffix became productive in English during the 19th century for naming preferences and attractions.
Plant scientists use this term to describe organisms that thrive in full sunlight—and it turns out most plants on Earth have heliophilia because sunlight is their primary energy source through photosynthesis!
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