sigmaspire

noun

sig·​ma·​spire
-ˌspī(ə)r
: an S-shaped sponge spicule : a sigma twisted spirally

Word History

Etymology

sigma + spire

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Cite this Entry

“Sigmaspire.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sigmaspire. Accessed 23 Dec. 2024.

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