Definition of etiolate in English:



[with object]
  • Make (a plant) pale through lack of light.

    ‘the seedling had been etiolated by having been grown in darkness’
    • ‘Our results clearly indicate that P650 - 655 is the main photoactive LPOR complex involved in continuous Chl accumulation in illuminated leaves of plants that have not been previously etiolated.’
    • ‘Plants grown in pots were etiolated by keeping 4-week-old plants in complete darkness for 2 days.’
    • ‘Measurements of starch and sucrose contents were also performed on leaves from plants etiolated for 2 days in order to investigate whether the starch in the CMS plants could be metabolized.’
    • ‘Green barley that had never been etiolated gave essentially the same results as etiolated plants that were exposed to light.’


Late 18th century from French étioler, from Norman French étieuler ‘grow into haulm’ see -ate.