1
: any of several diseases characterized by skin lesions
2
Lupus astronomy : a southern constellation that is visible between the constellations of Scorpius and Centaurus and that is represented by the figure of a wolf
Above Lupus lies Scorpius, one of the few constellations whose star pattern actually suggests the object that it is named for. In the myths, the scorpion was assigned by Artemis, the hunting goddess, to kill Orion, far across the sky.—Don Moser

Examples of lupus 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.
This is when lupus, a whole-body autoimmune disease, targets the kidneys with inflammation. — Md Published, Verywell Health, 23 Oct. 2026 Other diseases that cause similar symptoms and findings include lupus, Lyme disease, fibromyalgia, vitamin B12 deficiency, and less common conditions like neuromyelitis optica and MOG antibody disease. — Lindsay Karp, STAT, 23 Oct. 2026 The internet’s obsession with her changing appearance and voice started after she was diagnosed with lupus in 2012 and underwent a kidney transplant in 2017. — Isabella Albaig, Vulture, 19 Oct. 2026 In 2014, the former Disney star entered a mental health facility shortly after she was diagnosed with lupus and later revealed she had been diagnosed with bipolar disorder. — Lauryn Overhultz, FOXNews.com, 19 Oct. 2026 See All Example Sentences for lupus

Word History

Etymology

Middle English, from Medieval Latin, from Latin, wolf

First Known Use

14th century, in the meaning defined at sense 1

Time Traveler
The first known use of lupus was in the 14th century

Cite this Entry

“Lupus.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/lupus. Accessed 27 Oct. 2026.

Medical Definition

: any of several diseases (as lupus vulgaris or systemic lupus erythematosus) characterized by skin lesions
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