alar septum

noun

Definition of alar septum

: one of the pair of lateral primary septa in the Paleozoic Tetracoralla from each of which the septa of one quarter of a corallite arise

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First Known Use of alar septum

1861, in the meaning defined above

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The first known use of alar septum was in 1861

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Cite this Entry

“Alar septum.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/alar%20septum. Accessed 9 Jul. 2020.

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