Definition of heliotropism in English:



mass noun
  • 1Botany
    The directional growth of a plant in response to sunlight.

    • ‘The adaptive significance of solar tracking in snow buttercups is mediated through the impact of flower heliotropism on paternal and maternal floral environments.’
    • ‘The heliotropism itself is an adaptation for survival, the plant maximizing sunlight.’
    • ‘All legume plants do this, so be sure to watch your peas and beans for signs of heliotropism.’
    1. 1.1Zoology The tendency of an animal to move towards light.