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terdiurnal

adjective
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ter·​diurnal | \ ¦tər+ \

Definition of terdiurnal

: occurring three times per day terdiurnal variation of atmospheric pressure

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History and Etymology for terdiurnal

ter- + diurnal

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“Terdiurnal.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/terdiurnal. Accessed 21 Oct. 2020.

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