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1861, in the meaning defined above
borrowed from New Latin, from Greek aktīn-, aktís “ray, beam, spoke of a wheel” + New Latin -idia (feminine derivative of -idium -idium); probably so called from the radiating arrangement of the stigmata
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“Actinidia.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Actinidia. Accessed 25 Oct. 2020.
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