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clostridial clos·trid·i·al (klŏ-strĭd'ē-əl)
Relating to a bacterium of the genus Clostridium.
Clostridium Clos·trid·i·um (klŏ-strĭd'ē-əm)
A genus of rod-shaped, spore-forming, chiefly anaerobic bacteria including the nitrogen-fixing bacteria found in soil and those causing botulism and tetanus.