Describing the behavior of organisms or cells that move in response to sunlight, either toward it or away from it.
From Greek 'helios' (sun) and 'taxis' (arrangement, movement), with the suffix '-ic.' The word emerged in biology to describe how living things respond to light direction.
Sunflowers aren't just pretty—they're heliotactic superstars, and so are many bacteria and algae that swim toward light like tiny swimmers chasing a glowing beach ball.
Complete word intelligence in one call. Free tier — 50 lookups/day.