Describing organisms that prefer or thrive best in full sunlight and bright conditions.
From Greek helios (sun) + -philous (loving, from philos). The -ous ending creates adjectives, making this the adjectival form of heliophilia.
Desert plants are quintessentially heliophilous—they've evolved special waxy coatings and light-colored leaves to not just tolerate intense sun, but to actually harness it more efficiently than shade plants can!
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