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photonasty

noun
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pho·​to·​nas·​ty
plural -es

Definition of photonasty

: a nastic movement that is associated with changes in light intensity

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History and Etymology for photonasty

International Scientific Vocabulary phot- + -nasty; probably originally formed as German photonastie

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“Photonasty.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/photonasty. Accessed 5 Mar. 2021.

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