be·ta·bac·te·ri·um | \ ¦bā-tə-ˌbak-¦tir-ē-əm+ \
Definition of betabacterium
1 capitalized : a genus or subgenus of heterofermentative lactobacilli
2 plural betabacteria\ ¦bā-tə-ˌbak-¦tir-ē-ə+ \ : a member of the genus Betabacterium : a heterofermentative lactobacillus
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