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’
    • ‘Green barley that had never been etiolated gave essentially the same results as etiolated plants that were exposed to light.’
    • ‘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.’
    • ‘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.’


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