labellum

noun

la·​bel·​lum lə-ˈbe-ləm How to pronounce labellum (audio)
plural labella lə-ˈbe-lə How to pronounce labellum (audio)
1
: the median and usually most morphologically distinct member of the corolla of an orchid
2
: a terminal part of the labium or labrum of various insects

Examples of labellum in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
They are characterized by a labellum or lip lined in red, purple or maroon that attracts pollinators. Joshua Siskin, Oc Register, 25 Apr. 2026 Consider, for instance, the Paphiopedilum, or slipper orchid, so named for the shoe-like appendage, called a labellum, into which pollinating insects crawl. Chloe Schama, Vogue, 17 Feb. 2023 The sepals, which are pink, petal-like extensions of the flower, look like wings while the lip (or labellum) mimics the body of a bee. Patricia Shannon, Southern Living, 30 Apr. 2020 The slipper orchids had brightly colored labellum surrounded by two massive petals and were about the size of a hand, fairly large for an orchid. Katy Kelleher, Longreads, 9 Oct. 2019

Word History

Etymology

New Latin, from Latin, diminutive of labrum lip — more at lip

First Known Use

1810, in the meaning defined at sense 1

Time Traveler
The first known use of labellum was in 1810

Browse Nearby Words

Cite this Entry

“Labellum.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/labellum. Accessed 27 Apr. 2026.

More from Merriam-Webster on labellum

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster