Definition of phototropic in US English:

phototropic

adjective

Biology
  • See phototropism

    • ‘These experiments provide evidence that periodic short-term exposure to wind can induce phototropic responses in the early stage of pine seedlings' development.’
    • ‘Blue-light reception in plants leads to phototropic plant movement, chloroplast relocation, and opening of stomatal guard cells.’
    • ‘It has been known for more than a century that unilateral illumination induces phototropic bending in plants.’
    • ‘Phototropins and homologs, recently renamed Phot proteins, comprise a class of blue-light receptors that are involved in phototropic plant movement, chloroplast relocation, and stomatal opening in guard cells.’
    • ‘At the end of the blue light treatment, wild-type hypocotyls showed curvatures of about 60°C and red-fluorescing chloroplasts in the phototropic arch (not shown).’

Pronunciation

phototropic

/ˌfōdəˈtrōpik/