In a manner exhibiting heliotropism; describing how organisms or plants turn or respond to sunlight.
From 'heliotropical' with the adverbial suffix '-ly,' following standard English conversion of adjectives to adverbs describing manner or process.
When a sunflower moves heliotropically across the sky, it's performing a slow dance that lasts all day—and botanists can actually measure and time how heliotropically different species move.
Complete word intelligence in one call. Free tier — 50 lookups/day.