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sinus [sinuses]▼noun[UK: ˈsaɪ.nəs] [US: ˈsaɪ.nəs]
sinusitis [sinusitises]▼noun[UK: ˌsaɪ.nə.ˈsaɪ.tɪs] [US: ˌsaɪ.nə.ˈsaɪ.tɪs]
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