[hahy-druh-pak] /ˈhaɪ drəˌpæk/

an urgent warning of navigational dangers in the Pacific Ocean, issued by the U.S. Navy Hydrographic Office.


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  • Hydropathy

    [hahy-drop-uh-thee] /haɪˈdrɒp ə θi/ noun 1. the curing of disease by the internal and external use of water. /haɪˈdrɒpəθɪ/ noun 1. a pseudoscientific method of treating disease by the use of large quantities of water both internally and externally Also called water cure Compare hydrotherapy

  • Hydropericarditis

    hydropericarditis hy·dro·per·i·car·di·tis (hī’drō-pěr’ĭ-kär-dī’tĭs) n. Pericarditis accompanied by an effusion of serous fluid into the pericardial cavity.

  • Hydropericardium

    hydropericardium hy·dro·per·i·car·di·um (hī’drō-pěr’ĭ-kär’dē-əm) n. The noninflammatory accumulation of watery fluid in the pericardial cavity.

  • Hydroperitoneum

    hydroperitoneum hy·dro·per·i·to·ne·um (hī’drō-pěr’ĭ-tn-ē’əm) n. See ascites.

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