isoceraunic from is- + ceraun- + -ic; isokeraunic from is- + keraun- (from Greek keraunos thunderbolt) + -ic
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“Isoceraunic.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/isoceraunic. Accessed 27 Sep. 2023.
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