Pneumococcal is an adjective used to describe Streptococcus pneumoniae-related infections and diseases (e.g., pneumococcal pneumonia) or bacteria. In medical contexts it can function attributively (pneumococcal infection) or, less commonly, as a noun in shorthand references to the pneumococcus organism. The word is long, multisyllabic, and features a cluster of consonants with a silent or subdued initial cluster.
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