Sistrurus
noun
Sis·tru·rus
si-ˈstru̇r-əs 
: a genus of small rattlesnakes (as a massasauga) having the top of the head covered with scales
Cite this Entry
“Sistrurus.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/Sistrurus. Accessed 26 Nov. 2025.
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