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| a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes. |
| an extraordinary or unusual thing, person, or event; an exceptional example or instance. |
BCG vaccine n.
See Bacillus Calmette-Guérin vaccine.
| BCG vaccine (bē'sē-jē') Pronunciation Key
A preparation used to immunize individuals against tuberculosis, consisting of attenuated live human tubercle bacilli (Mycobacterium tuberculosis), the bacteria that cause tuberculosis. |