spirulina

noun

spi·​ru·​lina ˌspī-rə-ˈlī-nə How to pronounce spirulina (audio)
ˌspir-ə-ˈlē-
: a microscopic filamentous aquatic cyanobacterium (genus Spirulina, especially S. platensis synonym Arthrospira platensis) that is sometimes cultivated for use as food especially as a dietary supplement

Examples of spirulina in a Sentence

Recent Examples on the Web
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Matcha and nutrient-dense spirulina are blended together with creamy almond milk and dates to create this healthy pick-me-up. Michele Laufik, Martha Stewart, 9 Feb. 2026 Made with chlorella and spirulina, this mask is the ultimate detox. Audrey Lee, Architectural Digest, 9 Feb. 2026 What’s known about beetroot and spirulina extract The petition that raised beetroot red for the FDA’s consideration was submitted in November 2023 by Phytolon, a natural colors manufacturer based in Israel. Kristen Rogers, CNN Money, 5 Feb. 2026 Both chlorella and spirulina are nutritious types of algae that can be taken in supplement form. Bestreviews, Chicago Tribune, 3 Feb. 2026 See All Example Sentences for spirulina

Word History

Etymology

New Latin, from spirula small coil, diminutive of Latin spira coil

First Known Use

1846, in the meaning defined above

Time Traveler
The first known use of spirulina was in 1846

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Cite this Entry

“Spirulina.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/spirulina. Accessed 15 Feb. 2026.

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