hay bacillus


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Related to hay bacillus: grass bacillus, B. subtilis
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Noun1.hay bacillus - a species of bacillus found in soil and decomposing organic matterhay bacillus - a species of bacillus found in soil and decomposing organic matter; some strains produce antibiotics
B, bacillus - aerobic rod-shaped spore-producing bacterium; often occurring in chainlike formations; found primarily in soil