Definition of "phototactic" []

• Of or relating to phototaxis (adjective)

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• "Unlike other algae genera sequenced to date, these swift swimmers can cut through the water column at a rate of 50 body lengths per second, and are phototactic, meaning that they can swim towards the sunlight from which they derive their energy."
• "Isopods are negatively phototactic (reathey ct to light by moving away from it), and usually remain hidden under rocks and debris."
• "The results demonstrated that in free-swimming spheroids, only those cells of the anterior hemisphere that face toward the light source reverse the beating direction in the presence of illumination; this behavior results in phototactic turning."