Definition of leptospire
: any of a genus (Leptospira) of slender aerobic spiral-shaped spirochetes that are free-living or parasitic in mammals
leptospiralplay \ˌlep-tə-ˈspī-rəl\ adjective
Medical Definition of leptospire
: any spirochete of the genus Leptospira—called also leptospira
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